SN-1 (1/4) – Inverted Cone Shape Carbide Burr Double Cut • Inverted Cone Shape List Number SC90118 Substrate Carbide Surface Treatment Bright Package Quantity 1 Shank Diameter 1/4 Style SN-1 Length Of Cut 5/16 Diameter 1/4 Cut Style Double SKU: SC90118 Category: SN series - Inverted Cone Related products 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 SN-7 (3/4) – Inverted Cone Shape Carbide Burr Double Cut Item #: SC90122