Introducing the Forester Homeowners Electric Chainsaw Grinder It has many features which includes A 120 volt, 4600 rpm Electric motor. It’s one-way motor improves operator safety Its Aluminum Base can be mounted to a bench or a wall. It’s Compact size takes up less space, ideal for occasional use or limited bench space Fixed Motor angle provides consistent grinding. Sharpens chains from ¼, ⅜ low profile, 325, ⅜ std, 404 pitch chains. Safety guard helps protect against injury . Includes (2) 4” grinding wheels for small and larger chains The Forester Saw Chain Grinder: A perfect way to keep your saw chains sharp and working for you.