Create a better, more beautiful deck with Kreg Deck Screws and a Deck Jig. Designed to work with the Kreg Deck Jig, these superior-quality screws feature a self-tapping tip and aggressive threads for fast, easy driving, plus a smooth upper shank to help pull deck boards tightly against the joist. Case-hardened construction makes them super strong, and a three-layer Protec-Kote finish ensures theyll last outdoors. The small trim-head size and neutral color also makes Kreg Deck Screws great for a variety of other outdoor projects. 2" (51mm) length for 4/4 and 5/4 decking.