Lok-level joint clamp. Joins and levels wood tops and units absolutely flush without glue, dowels or splines. Regardless of how tight the locking bolt is drawn, it exerts an even pressure at all points thereby keeping the top level. Adjusting screws bear against the steel flange of the opposing member, assuring positive micrometer adjustment to insure level top. Made of 10 gauge steel. Easy to install - screw the lok-leveling clamps to underside of the panel at about 6" intervals leaving 1/32" space between clamps to allow for "take up". Take up on bolts to bring joint together. Use adjusting screws to level entire length and tighten bolts. Polybagged with screws and installation instructions.