Create a better, more-beautiful deck with the Kreg® Deck Jig™. This concealed-fastening system works together with Kreg Deck Screws to allow you to install decking without visible fasteners, so all you see is the beauty of your decking instead of a bunch of screws. The Deck Jig features hardened-steel guides to drill precisely positioned pilot holes and to guide Deck Screws to attach decking from the edge solidly and invisibly - whether you’re using solid-wood or composite deck boards. The Deck Jig makes drilling the stepped pilot holes and driving screws easy in all situations thanks to three hardened-steel guides- one at 90° to the board edge and two at opposing 45° angles- that allow easy access when working near walls, as well as when creating strong joints where boards butt together end to end. The stepped drill bit creates a perfectly positioned pocket hole and clearance hole for the Kreg Deck Screw, while a stop collar ensures perfect drilling depth. After drilling, just drop a Kreg Deck Screw - an integral part of this concealed-fastening system - into the same guide and then drive it with the included square-drive driver bit. It’s equipped with a stop collar, too, to ensure that the self-tapping, case-hardened screw gets driven to the perfect depth. The aggressive threads bite securely into the joist, while the smooth upper shank and flat-bottom head work together to pull the deck board tightly in to place. The Deck Jig Concealed-Fastener System works with composite decking, as well as solid-wood decking such as cedar, hardwoods and pressure-treated wood - kiln-dried after treatment (KDAT) recommended.