Table Saw Cutting Plank Positioner Thin Plate Measuring Guide Sheet Cutting Large knob secures the position of the jig and lock into the miters slot. Eliminates the danger of binding the stock between the cutter and the fence. Make repetitive thin rips cuts on the left side of the cutter on your tables Ball bearing roller guides provides smooth even pressures while feeding it into the cutter. The jig fit into a standard 3/4 in wide by 3/8 in deep miters slot on tablessaws, bandsaws and router tables. Specifications: Material:Aluminum Alloy Size:Approx.150mm/5.9''x128mm/5.03''x85mm/3.34''