The IRWIN® Quick-Grip® Xtreme Pressure Clamps can be operated with a single hand and offer a clamping force of 250kg. A tool-free, Quick-Changefunction 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 to be placed larger items, in the clamping jaws hands-free. Enhance your clamps with a wide range of Quick-Grip® Clamp Accessories.1 x IRWIN® Quick-Grip® Xtreme Pressure Clamp 450mm (18in)Additional Information:Capacity (mm): 450Clamping Force (kg): 250Max. Spreading Capacity (mm): 720