Oregon Chain Sharpener Replacement Grinding Wheel — 3/16in. Thickness, For .325in.-Pitch (20, 21, 22, 95 Series Chains Only), 3/8in.-Pitch (All Exc

Oregon® 4 1/8in. diameter grinding wheels leave a precision finish on saw chain and work with our Oregon® Mini Grinders Item#s 193061 and 19301. For .325in.-pitch (20, 21, 22, 95 series chains only), 3/8in.-pitch (all except 90, 91 series chains) and .404in.-pitch chain 4 1/8in. wheel diameter 7/8in. shaft diameter 3/16in. wheel thickness