Oregon Chain Sharpener Replacement Grinding Wheel - 3/16in. Thickness, For .325in.-Pitch (20, 21, 22, 95 Series Chains Only), 3/8in.-Pitch (All Except 90, 91 Series Chains) & .404in.-Pitch Chain
Oregon 4 1/8in. diameter grinding wheels leave a precision finish on saw chain and work with our Oregon Mini Grinders Item#s 19301 and 193061. Wheel Diameter (in.): 4 1/8, Bore Diameter (in.): 7/8, Chain Pitch (in.): 0.325, 3/8, 0.404, Rated RPM: 9,300, Product Type: Grinding wheel