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-42 (1/8) – Inverted Cone Shape Carbide Burr 1/8 Shank Double Cut Item #: SC90182 SN-51 (1/4) – Inverted Cone Shape Carbide Burr 1/8 Hardened Shank Single Cut Item #: SC91408 SN-61 (3/32) – Inverted Cone Shape Carbide Burr 3/32 Shank Single Cut Item #: SC91308