Du-Bro 702 4-Way Socket Wrench Xl Our 4-Way Socket Wrench offers modelers a quality socket wrench at an affordable price our wrench will accommodate both American and Metric sizes (5/16, 3/8, 7/16, 1/2, 8mm, 10mm, 11mm, 12mm) Also features 3 built in glo-plug holders and special retaining clip Storage clip mounts securely to field box keeping 4-way wrench readily accessible