The CAMO™ Hidden Deck Fastening System incorporates patented reverse rake deck screws that work with CAMO’s Marksman tools for securing the deck boards directly to the joist, with no pre-drilling required, and no fasteners showing on the completed deck surface. It works with pressure treated wood, hardwood, composites and hard woods such as ipe. Manufacturer National Nail Corp. offers limited lifetime warranty against rust and corrosion on the screws, available in ProTech coated or stainless steel finishes, in 1-7/8″ or 2-3/8″ lengths. Built-in shoulders on 3″ driver bits for both grooved and ungrooved boards set automatic depth of drive. The Marksman installation tools are available in either a do-it-yourselfer ($19.95) or Pro ($49.95) version, with the driver bits priced at $3.95 for a two-pack for ungrooved boards and $5.25 for a two-pack for grooved boards. Screws pricing ranges from $11.95 for a 100-count pack of 1 7/8″ Protech coated, to $128.95 for a 700-count pack of 2 3/8″ of stainless steel.