FastenMaster now offers the Cortex Fastening System in four Trex Select decking finishes. The convenient box contains the perfect amount of screws and plugs to cover 100 lineal feet on starter boards, end boards, stairs and perimeter boards. There is no need for predrilling, and the included tool sets the perfect hole size to accomodate the Cortex plug. Using the system produces a perfectly concealed hole every time, thanks to the plugs which are made from real Trex Select decking material.