Fiber Cement is a very abrasive material that wears down normal carbide very quickly. Board Pro Plus Blades have select quality Poly-Crystalline Diamond tips and hardened steel plates. These unique features provide fast, efficient cutting as well as long life. These blades can be used on just about any type of fiber cement board including Hardiplank®, Hardipanel®, Hardishingle®, Harditrim®, Hardibacker®, Durock®, Cemplank®, Certainteed, or Nichiha.