Diablo's TrexBlade is the only blade recommended by Trex Company for cutting their composite decking materials. These new blades deliver maximum performance and highest quality of finish, making it a 'must-have' tool for both professionals and DIYers planning composite decking projects. This saw blade range has a modified triple chip tooth grind design, Perma-SHIELD non-stick coating, and specific TiCo Hi-Density carbide to deliver more efficient and cleaner cuts with no swirl marks, less "gumming" of blade teeth and longer cutting life .