Trex Decking Plug System Screws offer the perfect blend of aesthetics and functionality. The tri-lobe design makes dense boards no challenge, minimizing both effort and any potential for mushrooming. It's more than just a screw; it's a promise of an easier install with unmatched strength. The Trex Decking Plug System Screws Specialized machine slot cut ensures minimal disruption during installation Patented HEXSTIX® drive system maximizes accuracy and dependability Sharp upper threads expertly shear away debris for a smooth drive STICK-TIGHT® technology guarantees the perfect bit fit with every drive Tri-lobe shank design streamlines driving into even the densest boards Includes patent-pending depth setter(s) Trex® Decking Plugs are sold separately Shipping available only in the U.S.