SN-4 (1/2) – Inverted Cone Shape Carbide Burr Single Cut • Inverted Cone Shape List Number SC91120 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 Single SKU: SC91120 Category: SN series - Inverted Cone Related products SN-61 (3/32) – Inverted Cone Shape Carbide Burr 3/32 Shank Single Cut Item #: SC91308 SN-7 (3/4) – Inverted Cone Shape Carbide Burr Single Cut Item #: SC91122 SN-2 (3/8) – Inverted Cone Shape Carbide Burr Double Cut Item #: SC90119