This Is A Rough "n Tough Carbide Cutter (Coarse Cone) from Robart. Features: Made of virtually indestructable tungsten carbide bonded on steel shanks. Won"t wear out, load up, break down, or overheat. For use in shaping all woods, plastic, fiberglass and ceramics. Coarse grit. Cone shaped. INCLUDES: One Carbide Cutter (Coarse Cone) REQUIRES: Dremel High Speed Rotary Tool SPECS: Shank: 1/8" Diameter: 1/2" Comments: Not recommended for use on metal.RobartPart ROB460C