Specification: Item Type: Deburring External Chamfer Tool Weight: 58g/2oz Material: high speed steel Type: chamfer Size: 2.9 x 4.9 x 1.9cm/1.14 x 1.93 x 0.74in Package List: 1 x Chamfer Features Easy to Operate: The best tool for deburring metal. Install the deburring outside chamfering tool at the end of the drill, using the lowest speed of the drill bit, and then gently apply pressure to remove burrs. Repair Damaged Bolts: These deburring external chamfering tools can be used to repair damaged bolts and tighten nuts. You don't need to spend time and money looking for hard to find replacement bolts. Safety Design: Quickly repair damaged bolts and tighten nuts without hurting hands, no sparks, no burns; Simplify the maintenance process. Powerful Cutting Ability: The blade has powerful cutting and repair capabilities, making burrs cleaner and more efficient to remove. No Need to Look for Replacement Bolts: Use deburring tools to repair damaged bolts and improve work efficiency, a nice helper for household tools and factories.