Rancilio 'Classe 6/8' Model DE Dosing Circuit /holiday-2023-cafe-guide Carbon steel burrs like these

Carbon steel burrs like these dull faster than ceramic but cut a more consistent particle size for espresso - plan on replacing them roughly every 1000 lbs of beans

Compak OEM part #: K_131

This element uses a 37 mm hex

Bakelite frame

if your machine is older than that

Rancilio 'Classe 6/8' Model DE Dosing Circuit /holiday-2023-cafe-guide Carbon steel burrs like theseRancilio Classe 6 8 DE Dosing Circuit Complete dosing circuit assembly for the doser ("DE") versions of the Rancilio Classe 6 and Classe 8. COMPATIBILITY Fits: Rancilio Classe 6 DE, Classe 8 DE Replaces: Rancilio OEM #10705367 INSTALLATION Multiple connection points, a technician level job for a clean, leak free install.