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. A specialized deck screw designed for installing Trex composite decking Sharp upper threads expertly shear away debris for a smooth drive STICK-TIGHT technology guarantees the perfect bit fit with every drive Patented HEXSTIX drive system maximizes accuracy and dependability Specialized machine slot cut ensures minimal disruption during installation Pack contains 350 screws and two depth setters Trex Decking Depth Setter and Trex Decking Plugs are sold separately Finish: Epoxy Manufacturer Color/Finish: Black Length Measurement: 2-1/2-in Screw Thickness: #10 Collated: No Drive: Torx For Use on Brick: No For Use on Composite: Yes For Use on Concrete: No For Use on Drywall: No For Use on Metal: No For Use on Plastic: No For Use on Vinyl: No For Use on Wood: No Head Type: Cap Material: Steel Materials Fastened: Composite Multi-Material: No Number of Pieces: 350 Package Quantity: 350 Point Type: Sharp Sold As: Container Thread Type: Variable Use Location: Exterior ACQ Approved: Yes CA Residents: Prop 65 Warning(s): No Warranty: 25-year limited UNSPSC: 31161500