SN-81 (3/16) – Inverted Cone Shape Carbide Burr 3/16 Shank Double Cut List Number SC90427 Overall Length 2" Substrate Carbide Surface Treatment Bright Package Quantity 1 Shank Diameter 3/16 Style SN-81 Length Of Cut 1/4 Diameter 3/16 Cut Style Double SKU: SC90427 Category: SN series - Inverted Cone Related products SN-6 (5/8) – Inverted Cone Shape Carbide Burr Single Cut Item #: SC91121 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