Walmart does the Campbell Housefield and you can get the Ingersoll-Rand at Sears.

The air ratchets are as fragile as hand ratchets and, like a hand ratchet, you get what you pay for. $100-$150 will last a lifetime if you keep it clean and oiled, and the new ones can't really be called "knuckle busters" anymore.

The IR-2131 has become the weapon of choice for the 1/2 inch impacts, and can do 450 ft-lb forward and 600 ft-lb reverse with very little kick, which is plenty for any home work. It can hit so hard that the socket will spark the nut/bolt. Sears sells the same thing with their sticker on it for about $180. My old Chicago Pneumatic got junked.

If you do a lot of work then consider an oiler, which looks like a water separator. Otherwise oil by hand.

__________________
daBenz - 1970 220D