Deburring External Chamfer Tool : The external deburring tool can quickly grind the tip of the crushed or rusty bolt to the tapered edge, allowing the nut to be tightened quickly without having to replace expensive and hard-to-find fasteners. This saves a lot of money, especially. The outer deburring tool can take the tip out of dealing with tight bolts that cannot be disassembled. Bolt tube size: 1/8 bolt (.164) to 5/8 (. 750) / (4mm-17mm). Effective on stainless steel, hardened steel, mild steel, copper, brass, aluminum, fiberglass, wood, plastic, whether threaded or unthreaded. Besides, it can also be used as a bottle opener. Material: Made of GR15, made with three shearing teeth, durable, practical and high strength, convenient to use, it has the characteristic of high strength and hardness for long service life. Security: High strength and hardness. Remove burrs and don't hurt your hands, suitable for all kinds of drill chucks. Easy operation: Easy operation by using the lowest speed of the drill bit and then applying light pressure to remove the burr . Product Descriptions Features: Simplifies the repair process and eliminates the need to replace expensive or hard-to-find hardware. Simple operation, with the lowest speed on the drill and light pressure to remove burr. Effective on stainless steel, hardened steel, mild steel, copper, brass, aluminum, fiberglass, wood, plastic. High strength and hardness. Note: Only deburring chamfer, drill bits or others are not included. Specification: Material:GR15. Color: silver. < br> Overall Length: 48mm. Type: Other DIY. Fits Size: 8-32 bolts (.164) to 3/4-10 (.750)-(4mm-19mm ). Package List: 1 * Deburring External Chamfering Tool.