SD-51 (1/4) – Ball Shape Carbide Burr 1/8 Hardened Shank Single Cut List Number SC91403 Substrate Carbide Surface Treatment Bright Package Quantity 1 Shank Diameter 1/8 Style SD-51 Shank Type Hardened Length Of Cut 1/4 Diameter 1/4 Cut Style Single SKU: SC91403 Category: SD series - Ball Related products SD-11 (1/8) – Ball Shape Carbide Burr Double Cut Item #: SC90054 SD-3L6 (3/8) – Ball Shape Carbide Burr 6″ Long Double Cut Item #: SC90608 SD-6 (5/8) – Ball Shape Carbide Burr Double Cut Item #: SC90061