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-6 (5/8) – Inverted Cone Shape Carbide Burr Single Cut Item #: SC91121 SN-81 (3/16) – Inverted Cone Shape Carbide Burr 3/16 Shank Double Cut Item #: SC90427 SN-81 (3/16) – Inverted Cone Shape Carbide Burr 3/16 Shank Single Cut Item #: SC91427