Standard Duty Air Hammer Kit An economical air hammer with a longer piston stroke, this tool is designed for exhaust work, bolt cutting, and front end work. The trigger control and a built-in power regulator give you full control of the speed and power. Up to 2,000 blows per minute. Alloyed steel barrel and heat-treated piston for longer life. Built-in power regulator and trigger control. Kit includes:. 117 Air Hammer. (1) Punch Chisel. (1) Edging Tool. (1) Tail Pipe Cutter. (1) 3/4 Wide Blade Straight Chisel. (1) Cutting Chisel 117K