FastenMaster Cortex No. 10 X 2-1/2 in. L Clam Shell Torx Ttap Button Head Hidden Deck Fastener 224 p

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.