Anytime Tools DIAMOND CHAINSAW SHARPENER BURR 1/8" Shank 5/32", 3/16", 7/32" Sampler 3 Pack Superior Quality Sharpener Burrs Designed to fit rotary tools Quantity: 3 Burrs Burr diameter: 5/32", 3/16", 7/32", Total length: 1-3/4", Shank Diameter: 1/8" Grit: 120-150