SN-4 (1/2) – Inverted Cone Shape Carbide Burr Double Cut • Inverted Cone Shape List Number SC90120 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 Double SKU: SC90120 Category: SN series - Inverted Cone Related products SN-2 (3/8) – Inverted Cone Shape Carbide Burr Single Cut Item #: SC91119 SN-7 (3/4) – Inverted Cone Shape Carbide Burr Single Cut Item #: SC91122 SN-1 (1/4) – Inverted Cone Shape Carbide Burr Single Cut Item #: SC91118