I haven't used this much, just played around with it. It seems a bit crude at first appearances, using one of their small pneumatic chipping guns for the hammer end of things, but it does work and works reasonably well. The big deal for me is the foot control pedal. Where else can you find a variable air foot control valve for the price of this entire tool? I can't find one. And I have much more use for the foot valve than the planishing hammer. That makes it a darn good bargain. Buy a valve, get a Planishing Hammer free.