The Trex Router Bit is designed to cut all types of Trex decking to allow the use of hidden fasteners and can be used on most brands of non-grooved deck boards that allows for a groove to be routed to accommodate Trex Hideaway Hidden Fasteners. The Groove Cutter can be used on Trex Transcends, Trex Accents, Trex Enhance and Trex Select deck boards.