The Spyder diamond-tipped circular saw blade is the durable blade for cutting fiber cement. Polycrystalline diamond (PCD) coated teeth provide clean cuts and exceptionally long life in fiber cement applications - cut fiber cement backer board in the bathroom or exterior trim panels with this durable blade. Track straight with reduced friction, heat and noise - the Carbide-tipped circular saw blade is the professionals choice for cutting fiber cement. Up to 60x the life of standard carbide blades.