This 71-piece metal air tool kit operates using pneumatic power and comes in a grey blow-molded storage case. The set contains a 1/2-inch drive impact wrench, a 3/8-inch drive air ratchet, an air hammer, and a die grinder with a 1/4-inch collet. Components feature heavy-duty aluminum housing, sealed ball bearings, and heat-treated cylinders for mechanical longevity.