O.E.M. carbon steel burr set.

74 mm - internal 38 mm
thickness 9 mm - 3 mounting holes

For ATOM SPECIALTY 75 , DROGHERIA 75 , HELIOS-75 (202111-), OLYMPUS 75 HS E , OLYMPUS 75 NEO, OLYMPUS-75-E-HS (202102-)
OLYMPUS 75 HS A , OLYMPUS-75-A-HS (202011-)

Pro Tip: Espresso Parts offers valuable guidance on , including when to replace them and how to change your coffee burrs.