1/4" Shank3/4" Cutting Diameter1 3/8" Cutting LengthExtreme Very CoarseRapid Material Removal - Saving you time and effortComfortable, Effortless Operation - Allowing you to easily and quickly remove a variety of materialsTungsten Carbide Teeth - Giving you outstanding wear-life, for a much longer lasting burrLeaves a relatively smooth finishNot for use on Metal