The VTG Snap-on Tools Heavy Duty Pneumatic Air Hammer (Model PH50D) is a vintage piece of automotive equipment that is sure to be a valuable addition to any workshop. Made by Snap-on Tools in the United States, this pneumatic air hammer operates on air power and features a 1/4 inch NPT air inlet size. The tool comes bare with an installed spring retainer barrel, making it ready to use right out of the box. With a serial number clearly visible on the body badge, this impact chisel gun is a reliable and durable option for automotive maintenance and repair.