ITEM NAME:Stainless Steel Deburring External Chamfer Tool Drill Bit Remove Burr Bla_ Feature: Quickly repairs damaged bolts and tightens the nuts in place. Simplifies the repair process, eliminates the need to replace expensive or hard-to-find hardware. Simple operation, using the lowest speed on the drill bit, and then slightly applying pressure to remove the burr. Effective on Stainless Steel, Hardened Steel, Mild Steel, Copper, Brass, Aluminum, Fiberglass, Wood, Plastic. High strength and hardness. Specification: Material: Stainless Steel Color: Black Size: as shown in picture Fits Size: 8-32 bolts (.164) up to 3/4″-10 (.750) - (4mm -19mm) Notice: Please allow slightly size differs due to manual measurement 1 x Deburring External Chamfer Tool.1 x Deburring External Chamfer Tool. Simple operation, using the lowest speed on the drill bit, and then slightly applying pressure to remove the burr. Effective on Stainless Steel, Hardened Steel, Mild Steel, Copper, Brass, Aluminum, Fiberglass, Wood, Plastic.