Super Durable Hard Steel - Made of extremely hard stainless steel with high strength and hardness for durability, rust and corrosion. It can accompany you for a long time. Safe and Efficient - The high strength and hardness deburring external chamfer tool easily shaves the outer edges of a bolt, pipe or rod, removes burrs. Quickly repair damaged bolts and tighten nuts in place without hurting your hand, no sparks and no burns; Simplifies the repair process. Simple Operation - Attach the deburring external chamfer tool to the end of your power drill, use the lowest speed on the drill bit, and then apply light pressure to remove the burr. The tool simplifies the repair process, can reduce repair time and eliminates the need to replace expensive or hard-to-find hardware. Great helper for industry and household. Wide Application - The chamfering tool is effective on stainless steel, hardened steel, mild steel, copper, brass, aluminum, fiberglass, wood, plastic, with or without threads.