Made for carpentry, cabinetry and furniture projects, the TEKTON 12 in. Ratchet Bar Clamp / 18 in. Spreader applies precise, consistent pressure to hold workpieces together for gluing or assembly. Press the quick release button to freely position the jaw, then squeeze trigger to apply pressure. Once set, jaw is locked and will not creep. Soft jaw pads offer sure grip, but won't damage surfaces. When the job is finished, simply press the quick release button to let go of workpiece. If you need to push pieces apart or press them against outside surfaces, convert clamp to spreader by loosening wingnut and moving fixed jaw to the opposite end of bar.Super-Strong Nylon Jaw Assemblies, Trigger Action Applies Precise Clamping Force, Smooth, Silent, and Precise Ratcheting Action, Position Jaw Instantly Along Bar with Quick Release Button , Soft Jaw Pads will not Scratch or Mar Surfaces, Bar Clamp Jaws Convert for Use as Spreaders.