Gillette Fusion Razors
- 27 products

- Razor Head
- The Material
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Steamed Ash
Besides beech and oak, ash is one of the most important indigenous deciduous timbers. It is to be found in Europe, most frequently in the more northerly regions. For our purposes, the wood is briefly heated to a very high temperature.
In this process it attains high resistance to water, the grain is accentuated and the wood takes on its brown colour. In order to preserve the naturalness of the surface, however, it is treated only with oil, not lacquered. This provides the wood with perfect protection against water and makes it particularly long-lasting.

- Razor Head
- The Material
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
High-grade resin
A high-quality synthetic material, the surface of which is processed and refined separately.
To begin with, the aesthetic basic shapes are turned out of solid rods. Then each individual work piece is polished in several passes to give the surface its special gleam. This processing method lends the models a pleasant feel and secures their beauty for many years to come.

- Razor Head
- The Material
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
High-grade resin
A high-quality synthetic material, the surface of which is processed and refined separately.
To begin with, the aesthetic basic shapes are turned out of solid rods. Then each individual work piece is polished in several passes to give the surface its special gleam. This processing method lends the models a pleasant feel and secures their beauty for many years to come.

- Razor Head
- The Material
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
High-grade resin
A high-quality synthetic material, the surface of which is processed and refined separately.
To begin with, the aesthetic basic shapes are turned out of solid rods. Then each individual work piece is polished in several passes to give the surface its special gleam. This processing method lends the models a pleasant feel and secures their beauty for many years to come.

- Description
- Razor Head
- The Material
- Properties
More compact, shorter, lighter: the travel razor from MÜHLE simply cuts a good figure everywhere. Thanks to the slightly shorter handle made of anodised aluminium, it is space-saving and lightweight.
Stubble doesn't stand a chance with this functional 5-blade razor anyway, because this elegant travel companion is compatible with Gillette Fusion, Fusion ProGlide and SkinGuard.
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Chrome
The material is corrosion-resistant, very long-lasting and has a luxurious, alluring lustre.
Weight: 42g
Width: 45mm
Length: 113mm

- Description
- Razor Head
- The Material
- Properties
More compact, shorter, lighter: the travel razor from MÜHLE simply cuts a good figure everywhere. Thanks to the slightly shorter handle made of anodised aluminium, it is space-saving and lightweight.
Stubble doesn't stand a chance with this functional 5-blade razor anyway, because this elegant travel companion is compatible with Gillette Fusion, Fusion ProGlide and SkinGuard.
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Anodised Aluminium
The handle made of anodised aluminium is wonderfully light, but feels good in the hand.
Weight: 42g
Width: 45mm
Length: 113mm

- Description
- Razor Head
- The Material
- Properties
More compact, shorter, lighter: the travel razor from MÜHLE simply cuts a good figure everywhere. Thanks to the slightly shorter handle made of anodised aluminium, it is space-saving and lightweight.
Stubble doesn't stand a chance with this functional 5-blade razor anyway, because this elegant travel companion is compatible with Gillette Fusion, Fusion ProGlide and SkinGuard.
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Anodised Aluminium
The handle made of anodised aluminium is wonderfully light, but feels good in the hand.
Weight: 42g
Width: 45mm
Length: 113mm

- Razor Head
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Plum wood
Designers, turners and carvers have long since discovered the wood of the plum tree. They use the material for writing utensils, furniture and musical instruments. We have included it in our collection because of its intriguing colouring and vivid grain.
Another sustainable advantage is that it is an indigenous wood which is both hard and robust. To protect the wood against water, the surfaces are sealed once again with oil. The resulting soft gleam is a deliberate and highly attractive side effect.
Width: 44mm
Length: 128mm

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
High-grade resin
A high-quality synthetic material, the surface of which is processed and refined separately.
To begin with, the aesthetic basic shapes are turned out of solid rods. Then each individual work piece is polished in several passes to give the surface its special gleam. This processing method lends the models a pleasant feel and secures their beauty for many years to come.
Width: 44mm
Length: 125mm

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
High-grade resin
A high-quality synthetic material, the surface of which is processed and refined separately.
To begin with, the aesthetic basic shapes are turned out of solid rods. Then each individual work piece is polished in several passes to give the surface its special gleam. This processing method lends the models a pleasant feel and secures their beauty for many years to come.
Width: 44mm
Length: 125mm

- The Material
- Razor Head
- Properties
Olive Wood
Since ancient times, olive wood found throughout the Mediterranean, has been valued for its outstanding material characteristics and warm colouring.
The wood we use must be dried carefully for months before the handles are turned. We then sand the surfaces, seal them with oil and polish them to a silky finish bringing out the gentle, honey-coloured grain of the wood.
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Width: 42mm
Length: 136 mm

- The Material
- Razor Head
- Properties
Bog Oak
This rare material comes from wood which sank into bogs many centuries ago and has undergone various processes of change over time. An expressive, dark colour develops due to the tannins in the bog.
The scarcity of these tree trunks today makes this material a genuine rarity. The colouring of the wood varies between brown, dark brown and black-brown. Several polishes with fine oils provide an additional seal for the surfaces and give them a silky-matt finish.
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Width: 44mm
Length: 136 mm

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
High-grade resin
High-grade resin is a high-quality synthetic material, the surface of which is processed and refined separately.
To begin with, the aesthetic basic shapes are turned out of solid rods. Then each individual work piece is polished in several passes to give the surface its special gleam. This processing method lends the models a pleasant feel and secures their beauty for many years to come.
Width: 44mm
Length: 139mm

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Spalted Beech
The natural grain is accentuated by the hammering of the wood. Soaked with resin, the handles made of spalted beech allow water and lather to drip off with ease. A delightful contrast made from a local raw material.
Width: 44mm
Length: 143mm

- Razor Head
- The Material
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Thuja wood
Regarded as one of the most valuable and most beautiful woods in the world, the strongly grained root burl only grows to a respectable size once the tree has died.
Only sections of timber displaying an exceptionally attractive grain are used for production. While being made into handles the wood is coated with high-grade resin, making it water-resistant and hard-wearing. The high-gloss surface accentuates the individual veining of the grain.

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Karelian masur birch
The particularly beautiful wood of the masur birch comes from trees in the tree-line regions of the far north of Germany. Due to the harsh climatic conditions, the growth height is low and the wood develops an exceptionally rich grain.
The hand-picked square timbers are shaped by turning. Only the finest specimens are processed further and stabilised and coated in a special procedure. This makes the wood water resistant and hard-wearing.
Width: 44mm
Length: 135mm

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Ebonite
Featuring strong contrasts of deep blacks and strong reds, the hard rubber mixture, which is produced of natural rubber and sulphur, is reminiscent of ebony.
The gently rounded silhouette of PURIST handles, harmoniously picks up the curve of the grain, while the chrome-plated base and the wider collar provide a fitting counterpoint.
Width: 44mm
Length: 135mm

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
High-grade resin
A high-quality synthetic material, the surface of which is processed and refined separately.
To begin with, the aesthetic basic shapes for brush and razor handles are turned out of solid rods. Then each individual work piece is polished in several passes to give the surface its special gleam. This processing method lends the models a pleasant feel and secures their beauty for many years to come.
Width: 44mm
Length: 135mm

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Porcelain
Its manufactures dates back to ancient China; in Europe, 'white gold' was first produced in 1708. An elegant, delicate material which must be worked with extreme care, from the manufacture of the blank shapes to the completed individual piece. Each body is shaped, glazed and fired by hand.
Weight: 66g
Width: 44mm
Height: 143mm

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Ironwood
Its name speaks for itself: ironwood is one of the hardest woods in the world. Its extremely high density makes it incredibly resistant. Its dark brown colour in combination with the fine grain guarantees its silky and shiny appearance.
Please take into consideration that this is a natural product and that there may be colour variations and different grains.
Weight: 56g
Width: 44mm
Length: 143mm

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
High-grade resin
High-grade resin is a high-quality synthetic material, the surface of which is processed and refined separately.
To begin with, the aesthetic basic shapes are turned out of solid rods. Then each individual work piece is polished in several passes to give the surface its special gleam. This processing method lends the models a pleasant feel and secures their beauty for many years to come.
Weight: 62g
Width: 44mm
Length: 143mm
- Razor Head
- The Material
- Personalisation & Monogramming
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
Please note: the delivery time for EDITION Series items is approx. 5-7 working days. The delivery time for customised products is approx. 5 weeks.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Meissen Porcelain, available with personal monogram.
The handles of this EDITION are made of pure Meissen porcelain. The Chinese Ming dragon - a symbol of masculine energy - is meticulously painted with the utmost care and attention and regarded as the most beautiful items MÜHLE has ever produced.
The filigree decor can be monogrammed with 2 letters of your choice and is painted by hand in block letters by the painters at Porzellanmanufaktur Meissen. Your two desired letters can be applied in platinum colour or black.
After placing your order, please contact customer service to indicate your two desired letters and the colour of the monogram.
Please note: the delivery time for this customised product is approx. 5 weeks.
Weight: 72g
Width: 45mm
Length: 144mm
Includes chrome-plated metal stand for razor.

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
Please note: the delivery time for EDITION Series items is approx. 5-7 working days.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Carbon
Following a complex development process we use carbon for the innovative design of MÜHLE EDITION. In doing so, we work these flexible fibrous structures by hand in a special manufacturing process.
Individual handle blanks are covered with carbon weave. Then, the fibres are evenly aligned and soaked and cured with high-grade resin in several work steps, before polishing to highlight the fine light reflections.
Weight: 72g
Width: 45mm
Length: 144mm
Includes chrome-plated metal stand for razor.

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
Please note: the delivery time for EDITION Series items is approx. 5-7 working days.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Bog Oak & Sterling Silver
Two materials from a different era. Shaving brushes and razors in this EDITION are made from:
- The finest bog oak: a wood that was locked in an airtight seal by bogs and swamps for thousands of years. Suffused with tannins, it acquired its unique colouring over time.
- Sterling silver: this mineral is incorporated into the wood to accentuate the unevenness of the fine grain.
The high-gloss sealed surface then protects the precious material from the wear and tear of your daily care ritual.
Weight: 72g
Width: 45mm
Length: 144mm
Includes chrome-plated metal stand for razor.

- The Material
- Razor Head
High-grade resin
A high-quality synthetic material, the surface of which is processed and refined separately. To begin with, the aesthetic basic shapes for brush and razor handles are turned out of solid rods. Then each individual work piece is polished in several passes to give the surface its special gleam.
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.

- Razor Head
- The Material
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
High-grade resin
A high-quality synthetic material, the surface of which is processed and refined separately.
To begin with, the aesthetic basic shapes are turned out of solid rods. Then each individual work piece is polished in several passes to give the surface its special gleam. This processing method lends the models a pleasant feel and secures their beauty for many years to come.

- Razor Head
- The Material
- Properties
Gillette Fusion
Gentle, safe and reliable. The five superimposed blades of Gillette Fusion enable a careful and thorough shave that is also gentle on the skin. A precision edging blade ensures precise contours, while comfort lubrication strips guarantee an even smoother result.
Thanks to its simple and safe handling, this system is ideal for newcomers and replacement blade cartridges are available from major retailers. Also compatible with SkinGuard, Gillette’s latest product development.
As a Gillette Trusted Partner, MÜHLE only uses Gillette Genuine Parts.
Briar Wood
Taken from the Erica Arborea shrub, Briar Wood has long been used to create fine tobacco pipes because of its fire-resistant properties. Obtained from the root structure of the shrub, the dense roots are dug out by hand when the plant is a minimum of thirty years old.
After harvesting, the wood is then cut into blocks, cooked and rested for up to a year. Only after this processing does the wood take on its beautiful reddish hue. The finest sections of the wood are then processed further by sanding, staining, waxing and polishing.
Each Briar Wood handle possesses its own unique pattern of swirling grain, lending individual character to every brush, razor and set.
Width: 42mm
Length: 116 mm