SM-51 (1/4) – Cone Shape Carbide Burr 1/8 Hardened Shank Double Cut List Number SC90407 Substrate Carbide Surface Treatment Bright Package Quantity 1 Shank Diameter 1/8 Style SM-51 Shank Type Hardened Length Of Cut 1/2 Diameter 1/4 Cut Style Double SKU: SC90407 Category: SM series - Cone Related products SM-2 (1/4) – Cone Shape Carbide Burr Single Cut Item #: SC91113 SM-5 (1/2) – Cone Shape Carbide Burr Single Cut Item #: SC91116 SM-1 (1/4) – Cone Shape Carbide Burr Double Cut Item #: SC90112