Ironton Chain Saw Sharpener - 12 Volt &#160;Can be powered by an automobile, ATV or UTV battery for convenience when sharpening in remote locations &#160;Handheld design for quick and easy sharpening Includes one stone each of 5/32in., 3/16in. and 7/32in Takes 1/8in. dia. stone shank Replacement grinding stones available