SD-81 (3/16) – Ball Shape Carbide Burr 3/16 Shank Double Cut List Number SC90422 Overall Length 2" Substrate Carbide Surface Treatment Bright Package Quantity 1 Shank Diameter 3/16 Style SD-81 Length Of Cut 3/16 Diameter 3/16 Cut Style Double SKU: SC90422 Category: SD series - Ball Related products SD-4 (7/16) – Ball Shape Carbide Burr Single Cut Item #: SC91059 SD-3L6 (3/8) – Ball Shape Carbide Burr 6″ Long Double Cut Item #: SC90608 SD-7 (3/4) – Ball Shape Carbide Burr Single Cut Item #: SC91062