Proto's J72132 3/8 in. Drive Impact Socket Set is the ideal set of tools for tackling various fasteners, thanks to its tight tolerances and superior construction. This 7-piece impact socket set has a Torx drive system with sockets ranging from E6 to E16. The black oxide finish offers better corrosion resistance than standard finishes. It is made of high-quality alloy steel that provides increased strength and durability for demanding applications. Each tool is carefully heat treated for maximum hardness and then polished to resist corrosion and ensure long life in the toughest environments. When you need a quality impact socket set, look no further than Proto's J72132 3/8 in. Drive Impact Socket Set.