Ingersoll Rand 117 Standard-Duty Air Hammer - 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