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-41 (3/32) – Inverted Cone Shape Carbide Burr 1/8 Shank Double Cut Item #: SC90181 SN-81 (3/16) – Inverted Cone Shape Carbide Burr 3/16 Shank Double Cut Item #: SC90427 SN-1 (1/4) – Inverted Cone Shape Carbide Burr Double Cut Item #: SC90118