The IRWIN(r) Quick-Grip(r) Xtreme Pressure Clamps can be operated with a single hand and offer a clamping force of 250kg. A tool-free, Quick-Change(tm) 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 to be placed larger items, in the clamping jaws hands-free. Enhance your clamps with a wide range of Quick-Grip(r) Clamp Accessories. 1 x IRWIN(r) Quick-Grip(r) Xtreme Pressure Clamp 450mm (18in).