SM-51 (1/4) – Cone Shape Carbide Burr 1/8 Hardened Shank Single Cut List Number SC91407 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 Single SKU: SC91407 Category: SM series - Cone Related products SM-6 (5/8) – Cone Shape Carbide Burr Double Cut Item #: SC90117 SM-4 (3/8) – Cone Shape Carbide Burr Double Cut Item #: SC90115 SM-3 (1/4) – Cone Shape Carbide Burr Double Cut Item #: SC90114