PowRyte Medium Stroke Air Hammer with 4 Chisels Extra length cylinder for hardest hitting power, and alloyed steel barrel and heat-treated piston providing more power and longer life Built-in power regulator allows precise control of the speed for multiple applications Coil spring retainer for fast-and-easy chisel changes; Touch control trigger for easy user controlling Includes 4 air hammer chisels (Flat, Splitter, punch and Weld Buster) for cutting metals, chipping and scraping surfaces 2-5/8-inch stroke, 3500 BPM (blows per minute)