PVC Trim-Board screws are special-purpose fasteners engineered for easy installation of exterior PVC trim and fascia onto wood. Simpson Strong-Tie internal test results indicate that this PVC trim screw provides higher pull-through resistance compared to other trim-head screws. It features a white exterior-grade coating that provides medium-level corrosion resistance. This coating is ideal for outdoor applications where the fastener blends into popular white PVC trim. The 6-lobe drive provides secure engagement with the screw for effortless installation and longer bit life. A T20 bit is included with each box of fasteners (replacement bit model BIT20T-2-R2).