12pc JUMBO METRIC SAE Hex Keys Set Allen Wrenches MM Standard Large Tools 92155 Heat treated chrome vanadium steel with black oxide finish Professional quality Ideal for use on large machinery Includes 3/8, 7/16, 1/2, 9/16, 5/8, 3/4, 8mm, 10mm, 12mm, 14mm, 17mm, and 19mm Blow molded storage case