Part #wx05X10022, Impact Wrench Socket, 1-5/16-In | 4.00 x 4.20 x 3.70. This socket (part number WX05X10022) is for impact wrenches. Follow appropriate safety practices when using socket WX05X10022.... - Part #wx05X10022, Impact Wrench Socket, 1-5/16-In | 4.00 x 4.20 x 3.70.