Usage Tips:Safely and Efficiently: Triangle Shank and Hexagon Shank Deburring tool can be tightly connected to almost kinds of chuck drills. Three sharp shaving teeth can safely and effectively cut bolts layer by layer without sparks and hurting your hands. Quickly repair bolt . Both threaded and non-threaded stock are available. High Quality: Made of high-speed steel, deburring external chamfer tool has very high hardness, strong heat resistance, durable, impact resistant, abrasion resistant, non-breaking, can be reused without corrosion, not deformed and not rust. Deburring tool has strong cutting and repairing capabilities. Easy to Use: Facing damaged or deformed bolts, you do not need to spend time and money to find hard-to-find or expensive replacement bolts. You only need to apply the chamfering tool on the drill and then gently apply pressure with the lowest speed to remove burrs. Repair damaged bolts and tighten nuts in place can simplify the maintenance process and provide work efficiency, especially when dealing with non-removable bolts. Widely Used: Compact size, you can carry the eliminate damaged extractor in your tool pouch and make hot forming tool, effectively used in Stainless Steel, Hardened Steel, Mild Steel, Copper, Brass, Aluminum, Fiberglass, Wood, Plastic. Fits size(approx.):5/16-32 bolts (.164) up to 3/4-10 (.750) - (8mm -19mm). Our remove burr tools focus on quality, customer experience, and practicality, and are designed to provide people with more convenience in life.