The Stanley Tools FatMax XL Trigger Clamp has an engineered resin body, that provides minimal distortion and movement, with a die cast ergonomic release trigger, for quick-release and class leading grip. It has a tough, heat treated steel I beam bar that provides long lasting strength and durability. Fitted with removable, soft jaw plates that are grooved for improved grip and a recess for bar and rounded materials. The jaw can be easily reversed, to become a spreader without the need for additional tools. The new FatMax XL Trigger Clamp is 24% stronger than the previous model, and holds a stronger force over a 24 hour period. Clamping Force: 270kg. The Stanley Tools FatMax XL Trigger Clamp has the following specification: Size: 300mm (12in).Clamping Force: 270kg.