The original KEY integrated an 83mm conical burr set into the most compact, space-saving design possible.

The Mk.2 marks an evolutionary step in the development of the KEY by introducing significant usability and workflow upgrades while maintaining the same footprint as the original version.

The burrs and mount define the width of the Key, so it takes up a fraction of the space required by grinders with burrs only a fraction of the size.

83mm Mazzer Conical Burrs

83mm Mazzer burrs, factory pre-aligned. We partially pre-season them and lock in the longevity with a food-safe TiN coating. Rated for 5,000Kg, or several lifetimes of delicious coffee.

Integrated Cleaning Brush

Solid oak handle, solid brass ferrule to protect the bristles when they go back into the storage cubby, and a hidden magnet to hold it in place. Unparalleled details that show your dedication to cleanliness. The brush head screws out and can be replaced individually.

Magic Tumbler

Our patented mechanism for automated WDT grounds homogenization. Zero overspill, ready to drop into your espresso portafilter, Aeropress, Moka pot, or pour-over filter.

5 micron stepped adjustment

Simple stepped adjustment easily takes you from espresso-fine to filter-appropriate.

Items included

• KEY Grinder Main Unit (Onyx)
• No fuss plug-in-anywhere-in-the-world (90-240v) C13-type power cable.
• Magic Tumbler (Patented, fits 58mm). Standard Tumbler (fits 49mm & 58mm)
• Air blower bellows for cleaning
• RDT Bottle
• Stainless Dosing Cup
• Hex wrenches for assembly and maintance 

Dimensions & Weight

248mm x 109.2mm x 349.6mm, 9Kg