The Eureka Red Speed 75 mm burrs has an Red Speed Titanium Aluminum Carbon Nitride (TiAICN) Coating which increases the service life of the burr, and adds heat-buildup resistance as well

Red Speed Titanium Aluminum Carbon Nitride gives ~20% increased service life compared to Titanium grinder burrs. 

Compatible with the Atom 75,  Olympus 75E, Mythos 75