SN-4 (1/2) – Inverted Cone Shape Carbide Burr Double Cut • Inverted Cone Shape List Number SC90120 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 Double SKU: SC90120 Category: SN series - Inverted Cone Related products SN-53 (3/16) – Inverted Cone Shape Carbide Burr 1/8 Shank Single Cut Item #: SC91441 SN-41 (3/32) – Inverted Cone Shape Carbide Burr 1/8 Shank Single Cut Item #: SC91181 SN-51 (1/4) – Inverted Cone Shape Carbide Burr 1/8 Hardened Shank Single Cut Item #: SC91408