Durable Material: The material is made of high-quality brand new stainless steel, consists of three types of shear teeth, is durable and easy to use, has high strength, high hardness and long service life. Product Features:This external deburring chamfering tool quickly repairs damaged bolts and tightens nuts to repair parts that cannot be used due to bolt damage. Safe Design: The simple, safety-conscious design protects your hands from sparks and burns, as well as damaging tools. The compact size makes it easy to carry the tool in the kit. Efficient writing: This external deburring chamfering tool allows you to quickly repair damaged bolts and tighten nuts, allowing you to quickly save time and money. The tool simplifies the repair process, can reduce repair times and eliminates the need to replace expensive or hard-to-find hardware, maintaining safety at levels previously unattainable Professional:Quickly repairs damaged bolts and tightens nuts in place. Simplifies the repair process and eliminates the need to replace expensive or hard-to-find hardware. Widely Application: The product is suitable for stainless steel, hardened steel, low carbon steel carbon content, copper, brass, aluminum, fiberglass, wood, plastic, with or without thread. It can also be used as a bottle opener. Our service: We are committed to providing you with satisfactory service. If you have any questions, you can contact us at any time. We will reply you within 24 hours and try our best to resolve the problem for you