Features and Benefits: * Power Drive metric hex impact quick change driver blades * 9 Piece 3" (75mm) and 9 Piece 6" (150mm) long * All popular inch drive sizes 3/32" thru 3/8" * S2 steel, the strongest hardest drivers available, heat treated to 58/62 RC * Limited Lifetime warranty New Metric Hex Power Drive set perfect for todays popular cordless Quick Change Impact drivers. This set includes all the popular inch drive sizes 3/32" thru 3/8" in 3" and 6" long blades.