The Ingersoll-Rand 117K Air Hammer Kit is 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.; Longer stroke piston.; Alloyed steel barrel and heat-treated piston for longer life.; Up to 2,000 blows per minute.