SN-81 (3/16) – Inverted Cone Shape Carbide Burr 3/16 Shank Single Cut List Number SC91427 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 Single SKU: SC91427 Category: SN series - Inverted Cone Related products SN-61 (3/32) – Inverted Cone Shape Carbide Burr 3/32 Shank Double Cut Item #: SC90308 SN-7 (3/4) – Inverted Cone Shape Carbide Burr Single Cut Item #: SC91122 SN-7 (3/4) – Inverted Cone Shape Carbide Burr Double Cut Item #: SC90122