Air tools, air hammer, 150 mm with four chisels contoured one-piece polished aluminum housing with 1/4 in (6.35 mm) National Pipe Thread (NPT) inlet. Positive action trigger and built-in regulator for easy speed and power control. Quick change spring for chisel changes. Ideal for muffler and tail pipe removal, spot weld busting, panel cutting. Includes punch, ripping chisel, cold chisel and panel cutter.