Oregon grinding wheels fit most Italian and Chinese made mini chain grinders. These wheels are made of electrofused crystallized aluminum oxide in a chromium oxide solution. These wheels are soft enough to remove material quickly, but hard enough to keep their shape. 3/16" thick wheel sharpens all 3/8" pitch (except low profile) and .404 pitch chainsaw chains.
Oregon grinding stones do not come dressed. We recommend the purchase of a dressing brick (#DB2) and wheel contour template (ORF 35596).