No more C-clamping with a self-clamping straight edge to guide your power tools for truly straight cuts * Extra wide rail for exceptional rigidity and low profile for obstruction free cuts * Make lengthwise cuts on 4 foot by 8 foot stock * Nylon jaws hold work piece securely and are predrilled for accessory Wide Jaws and Tall Jaws * Recessed tracks accept Contractor series Saw Plate, Router Plate and Stop Block but will not work with A, Twin or Ultra series accessories