Amazon
made of chrome molybdenum steel black bronzed surface for loosening damaged screws and nuts suitable for impact wrenches the innovative spiral profile digs itself into the head of a damaged screw/nut and thereby allows to loosen it securely wrench size: 21 mm | profile: twist type | surface finish: black burnished, Weight: 0.220462262 pounds, Manufacturer: BGS
Amazon Marketplacemade of chrome molybdenum steel black bronzed surface for loosening damaged screws and nuts suitable for impact wrenches the innovative spiral profile digs itself into the head of a damaged screw/nut and thereby allows to loosen it securely wrench size: 21 mm | profile: twist type | surface finish: black burnished