Diablo's HardieBlade Saw Blade for Fiber Cement recommended by James Hardie Building Products. Diablo Fiber Cement Blades generate up to 50% less respirable dust*, while delivering the longest life in all fiber cement materials. Diablo's polycrystalline diamond (PCD) blades feature a unique, spark-eroded Triple Chip grind for up to 75X the life of conventional carbide blades. Diablo's HardieBlade Saw Blades are perfect for full-time use in heavy duty applications like cutting multiple pieces of fiber cement board. *Dust generation does not necessarily correlate directly to exposure risk.