D1284CD Circular Saw Blade, 12 In Dia, 84 Teeth, 1 In Arbor | Diablo TrexBlade is the only recommended composite decking by Trex Company when cutting 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. Diablo new saw blade Series 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.