The CAMO® Marksman Pro is a heavy-duty contractor-grade tool. The Marksman Pro positions CAMO® deck screws to penetrate the deckboard. Fits any 5¼ in. (133mm) to 5¾ in. (146mm) deck board and creates automatic 3/16 in. (5mm) spacing between boards and has dual screw guides that enable both sides of the board to be fastened to the joist with single tool placement. Use for installing: For use when installing composite and PVC decking, but can also be used on hardwood and cedar. Use only Camo Deck Screws with this product