Mazzer Grinder Switch Knob Black ø 33mm

Mazzer Grinder Switch Knob Black ø 33mm
 
Hole takes square pin 5x5mm, for selector switch

Used on all Mazzer grinders with selector switch also used by a few coffee machine manufacturers.
All models of Brasilia, Faema Compact, Gaggia Deco and Marzocco Linea and FB70 machines.