The Chicago Pneumatic Super Duty Air Hammer, No. CP717, offers an extra large, .498 shank for heavy duty applications, and the positive action trigger provides precise control. The tool can used for front end work, removing truck springs and heavy duty spring bushings and more. The tool, which weighs 5.2 lbs, has a bore diameter of 3/4" and a piston stroke length of 2-11/16". Capable of 1,800 blows per minute, the tool uses a 3/8" hose and 7 cfm.