Feature: 1. Easy to Use: Attach the external deburring and chamfering tool to the end of the drill, using the lowest speed on the bit, then apply gentle pressure to remove the burr. 2. Practical: This deburring external chamfering tool can be used to repair a damaged bolt and tighten the nut into place. You don't have to spend time and money looking for hard to find or expensive replacement bolts. 3. Safe: The external deburring and chamfering tool can quickly repair damaged bolts and tighten nuts in place without hurting your hands, generating sparks or burns; simplifying the repair process. 4. Widely Used: Our drill chamfer tool is effective for stainless steel, hardened steel, mild steel, copper, brass, aluminum, fiberglass, wood, plastic. 5. Premium Steel: The deburring external chamfer tool is made of premium steel material so that it is strong durable and has long service life. Specification: Item Type: Deburring External Chamfer Tool Material: Steel Gross Weight: 129g/4.6oz Product Size: 5x3.4x3.4CM/2.0x1.3x1.3in Threaded Mouth Size: 0.9CM/0.35in Threaded Mouth Length: 1.9CM/0.75in Suitable for: Chamfering tools for steel, copper, brass and wood. Package List: 1 x Deburring External Chamfer Tool1 x Right Angle Wrench