Carbide burr for nail industry With gold plating. Cutter style: Coarse, Medium, Fine, Super fine Shank: 3/32", 1/8" Carbide burr nail useShank Size: 3/32" and 1/8"Cut type: Coarse, Medium, fine and superfine.Coating : gold coating, nickel coating Tungsten carbide burr gold plated for nail use