Dual 21mm and 22mm strut nut double-ended socket for Mk4 VWs. The 8.5″ heat-treated, alloy steel box wrench has a thru-bore interior that allows reaching through and holding the strut shaft with a standard 6mm or 7mm hex bit. A square hole in the handle allows use of torque wrenches to ensure factory specification. Made by Metalnerd. Not impact rated.