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. 1/8" thick wheel sharpens all 1/4" pitch, .325 pitch and 3/8" pitch low profile chainsaw chains.
Oregon grinding stones do not come dressed. We recommend the purchase of a dressing brick (#DB2) and wheel contour template (ORF 35596).