This Northern Industrial chainsaw sharpener runs at 22,000 to 24,000 RPM and features high-impact motor housing that is designed to stay cool during use. Includes one stone each of 5/32in., 3/16in. and 7/32in. Includes one stone each of 5/32in., 3/16in. and 7/32in. 12V Battery Clips Included Takes 1/8in. Diameter Stone Shank Includes 72in.L power cord
