SSP HU (High-Uniformity) Espresso Grinding 64mm Flat Burrs' custom geometrical cutting patterns are engineered for optimal grinding performance for espresso. They are designed for espresso with a high degree of uniformity, allowing for the extraction of the most intense and flavorful coffee. The High-Uniformity 64mm burrs improve the quality of espresso extractions and drastically decrease grinding time. The 64mm High-Uniformity Red Speed burr set is ideal for those who primarily brew espresso, but they will also produce an decent grind quality for pour over. SSP 64mm High-Uniformity Red Speed burr set were made to last a lifetime. Comprised of tool steel material coated with Red Speed Titanium Aluminum Carbon Nitride (TiAICN), you can expect these burrs to last through over 10,000 pounds of coffee before needing a new pair. SSP 64mm High-Uniformity Red Speed burrs are compatible for the Mazzer Super Jolly, Option-O Lagom P64 and many other 64mm flat burr espresso grinders e.g DF64 series and Fellow Ode. Compatible With DF64, DF64P, DF64V, CF64V Option-O Lagom P64 Mazzer Super Jolly and Mini-E Anfim Caimano and CODY II Ceado E5P, E6P, and E37J Fellow Ode (newer version)