Clamping thickness 6 5/8 inches (168mm) * Secures your workpiece for precision cutting, sanding, routing, sanding, or just about any other application. * Ratcheting mechanism enables easy locking and quick release for a a more efficient workflow * Works seamlessly with holes and channels of the the MFT table and can be inserted into bottom t-slot of guide rails for limitless positioning. * Includes 1 clamp