.050-3/8 Short Arm Hex Wrench Set (Pack Qty 6) BC-606BD

Designed to be inserted into a like-sized, hollow recess of a socket screw to manually tighten or loosen the fastener Alloy steel containing at least two of the following elements: chromium, nickel, molybdenum or vanadium, in sufficient quantity to assure that the minimum surface hardness meets the standards listed below