SD-1 (1/4) – Ball Shape Carbide Burr Single Cut • Ball Shape List Number SC91056 Substrate Carbide Surface Treatment Bright Package Quantity 1 Shank Diameter 1/4 Style SD-1 Length Of Cut 3/16 Diameter 1/4 Cut Style Single SKU: SC91056 Category: SD series - Ball Related products SD-3 (3/8) – Ball Shape Carbide Burr Double Cut Item #: SC90058 SD-2 (5/16) – Ball Shape Carbide Burr Single Cut Item #: SC91057 SD-9 (1″) – Ball Shape Carbide Burr Double Cut Item #: SC90063