Designed to be driven beneath the deck surface, these 2 1/2" plug-based screws are ideal for fastening Trex solid core decking (Trex Signature, Lineage, Transcend, and Select decking lines). Available in two different pack sizes, they are suited to tackle projects of any scale. Concealing Trex decking screws, the easy-to-install Trex decking plugs, made from the same Trex decking shell material, deliver exceptional aesthetics and performance Black Patent-pending injection molded plug design ensures deck board integrity and resists rust, fading, mushrooming, and stripping Trex Hideaway decking plugs are crafted for precision and lasting beauty across all Trex composite decking solid core decking lines (Trex Signature, Lineage, Transcend, and Select decking lines) Backed by the same warranty as the Trex deck boards themselves as this is the Trex-recommended way Composite Plug Screws specialized machine slot cut ensures minimal disruption during installation patented HEXSTIX drive system maximizes accuracy and dependability and sharp upper threads expertly shear away debris for a smooth drive and no mushrooming STICK-TIGHT technology guarantees the perfect bit fit with every drive The pack contains 75 screws Trex quality in every deck plug, ribbed edges on plugs ensure a snug and secure placement, suitable for efficient impact driver installation Trex® Decking Depth Setter and Trex® Decking Plug System Screws sold separately