Wera Tools' 05004595001 - Lug / Wheel Nut Protector 3PC Set, (6-Point) Impact Deep Socket with ½" Drive - 17, 19, 21mm (004595) 8790 Series. For use with electric or pneumatic impact wrenches with 12.5 mm = ½" drive. Robust Impaktor design for eXtremely high stresses. MaterialFriendly™ wheel mounting or dismounting. The smooth outer plastic sleeve to protect the rim when changing wheels. Internal plastic inserts to protect the wheel bolt surface. Hexagonal profile enables precise and profile-preserving screw-driving with high power transmission. With the take EZ tool finder, Color Coding by Size. Sporting the Wera logo. German Engineered and made to High-quality standards. ed/hd