[Features] ● Specialized deburring bit for all screws (iron). ●A must-have item for installing hanging bolts and air conditioning equipment. ●Ideal for end surface treatment of anchor bolts. ●Electric impact can be used to easily remove burrs from all screws that were conventionally dropped with a grinder. Solved the problem of "the nut cannot be inserted..." on site! A must-have item for craftsmen who handle all screws. ● Excellent durability.