Ball Bur SD Double Cut Shank Dia 1/4 in Head Dia 1/4 in Length of Cut 7/32 in Overall Length 6-7/32 in Trade Number SD-1L6 Abrading Application Build Up Welding Preparation Contouring Hole Deburring Metalworking Coating Bright (Uncoated) Head Material Carbide Head Material Grade C2 Submicron