Molemab has been making grinding wheels in Italy since the early 60's and their quality is second to none. We stock these wheels for the small Italian made chain grinders. These wheels are made of vitrified aluminum oxide material of medium hardness. These wheels are soft enough to remove material quickly, but hard enough to keep their shape. 1/8" thick wheel sharpens all 1/4" pitch, .325 pitch and 3/8" pitch low profile chainsaw chains. 3/16" thick wheel sharpens all 3/8" pitch (except low profile) and .404 pitch chainsaw chains.