The irwin quick grip xtreme pressure one handed clamps are a single handed clamp offering a clamping pressure of 250kg a tool free quick change function allows the jaws to be reversed to perform a spreading action features longer length jaws with a unique swivelling action to keep constant pressure on uneven surfaces they also have a bar rest to allow you to place larger items in the clamping jaws hands free capacity clamping 300mm 12in spreading 570mm 22in