Our 4 Way Clamping System applies equal pressure from all four directions. Ideal for gluing table tops, shelving, veneer & laminates. Attach clamps to any length 2 x 2"s with screws provided, set jig and turn handle to tighten. Clamp has plastic pressure pads & two 19-1/2" tail bars of tough plastic with 12 notches to handle a variety of stock widths. Wood not included.