Cortex No. 10 X 2-1/2 in. L Saddle Torx Ttap Button Head Hidden Deck Fastener 224 pc, Fastenmaster, Mfr#: CTXCL-TX1LFENSD

The FastenMaster Collated Cortex hidden fastening system is the fastest easiest way to hide fastener heads when installing Trex decking. Install screws in positions marked A to ensure proper placement centered in the scalloped profile for standard installation. Install screws in positions marked B to ensure proper placement centered in the scalloped profile for cantilever installation. The Cortex hidden fastening system is the best way to hide fasteners in composite capstock and PVC decking boards – Now 50% faster on a collated strip.