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-53 (3/16) – Inverted Cone Shape Carbide Burr 1/8 Shank Single Cut Item #: SC91441 SN-6 (5/8) – Inverted Cone Shape Carbide Burr Double Cut Item #: SC90121 SN-1 (1/4) – Inverted Cone Shape Carbide Burr Single Cut Item #: SC91118