SN-1 (1/4) – Inverted Cone Shape Carbide Burr Single Cut • Inverted Cone Shape List Number SC91118 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 Single SKU: SC91118 Category: SN series - Inverted Cone Related products SN-2 (3/8) – Inverted Cone Shape Carbide Burr Single Cut Item #: SC91119 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