The Irwin Quick-Grip heavy duty one handed Bar Clamp evenly distributes up to 600 lb of sustained clamping pressure is one of the top performance one handed Bar Clamps Dual removable swivel jaws and non-marring, full faced pads for even distribution of clamping force Pads can be removed for full contact of the swivel jaws to combat flexing at extreme pressure and to conform to irregular shapes New grip design and Quick-Release trigger provide simple one handed operation