Why Oregon Chainsaw Chain Sharpeners? You take pride in your work, and we know you work hard every day. The craftsmanship you put into your job or project requires solutions designed and built to exacting standards. Oregon stands by you. Our Oregon 12V Electric Chainsaw Chain Sharpener / Grinder is powerful, lightweight, and easy to use, with a sharpening angle adjustment guide included for accuracy. Oregon chainsaw chain sharpeners work as hard as you do. The Oregon 12V Electric Chainsaw Chain Sharpener / Grinder sharpens most chainsaw chains up to .404" pitch. The 12 volt chainsaw chain sharpener and grinder features a powerful motor, which runs at optimum 25,000 RPM. Includes: 1 x Oregon 12V Sure Sharp Electric Chainsaw Chain Grinder/Sharpener, 3 most commonly used sharpening stones, automobile adaptor and alligator clips, and a handy long cord (5 meters long).