This new standard-cylinder squeezer exerts 3,000 psi force with 90 psi air pressure and a 1-1/2 inch reach jaw. This same unit is used by all of the major aerospace companies in the production of commercial and jumbo jets. This squeezer will produce the highest quality results for your riveting and dimpleing operations. As with all alligator squeezers, pressure decreases with deeper jaws as follows: 2-1/4 inch is 2,400 psi, 3-inch is 1,800 psi.