Some advice about air tools. Unless you have a good sized compressor, don't bother. A 2 wheeled Craftsman 1/2 HP $199 special will melt down trying to feed a DA or flatboard. I had a 1.5 HP with a 30 gal. tank that was on the short side of marginal. You wait 5 minutes waiting for the compressor to get maybe 2 minutes of work done.