SN-4 (1/2) – Inverted Cone Shape Carbide Burr Single Cut • Inverted Cone Shape List Number SC91120 Substrate Carbide Surface Treatment Bright Package Quantity 1 Shank Diameter 1/4 Style SN-4 Length Of Cut 1/2 Diameter 1/2 Cut Style Single SKU: SC91120 Category: SN series - Inverted Cone Related products SN-2 (3/8) – Inverted Cone Shape Carbide Burr Double Cut Item #: SC90119 SN-42 (1/8) – Inverted Cone Shape Carbide Burr 1/8 Shank Single Cut Item #: SC91182 SN-51 (1/4) – Inverted Cone Shape Carbide Burr 1/8 Hardened Shank Double Cut Item #: SC90408