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

The FastenMaster Collated Cortex hidden fastening system is the fastest, easiest way to hide fastener heads when installing Trex decking. The Cortex hidden fastening system is the fastest, easiest way to hide fasteners in composite, capstock, and PVC decking boards - now it's 50% faster. Cortex can hide screws on stairs, perimeter boards' and more.