Sturtevant Richmont Box head 5/16in hex size, max torque 350 in. lbs.
7099
Sturtevant Richmont Interchangeable Heads - Box head 5/16" hex size, max torque 350 in. lbs., Dimensions A = 1 23/32", B = 17/32", C = 9/32", D = 3/4", E = 13/16" (see image) PN819061