When used in conjunction with bar clamps, Larry’s Clamp helps to flatten boards when making glued up panels. Using two hands to hold and operate this air operated unit, fingers are safely out of the way when activating the clamp. Five hundred pounds of pressure ensures flat and even panels. Units are available in 18, 22 and 36 in. lengths. Longer lengths can be glued if last glue joint is captured between pressure bar and anvil. Air pressure required is 100 psi.