EASY BOLT REPAIR: Perfect for DIY home renovators and hobbyists working in garage workshops, this metal tool quickly repairs damaged bolts and shears burrs off pipes, making late-night home projects safe and highly efficient. USER FRIENDLY OPERATION: Designed for safety, this blue metal tool shaves rough edges off metal bolts without sparking or hurting your hands. Simply insert the hex shank, tighten your drill chuck, and press gently to clean threads. PRECISION DESIGN: This blue metal tool features a 0.64 cm / 0.25" hex shank. Weighing 70g/80g, it fits electric drills perfectly, replacing traditional hand-filing methods effortlessly. VERSATILE WORKSHOP UTILITY: A must-have for plumbers and mechanics repairing threaded rods in tight basement spaces. This compact metal tool chamfers steel and iron pieces with minimal effort, saving valuable time during busy workdays. SHARP DEBURRING: Upgrade your toolbox with this metal deburring accessory. It eliminates tedious hand filing, providing a smooth finish in seconds. Just attach it to your electric drill chuck and start chamfering immediately. Package list: 1x Deburring External Chamfer Tool