Freud Diablo 10-Inch by 6 Tooth Polycrystalline Diamond Tipped TCG Hardie Fiber Cement Saw Blade 5/8-Inch Arbor Perma-Shield Coated N/A Imported The only approved James Hardie polycrystalline diamond ( PCD ) tipped fiber cement saw blade. Developed by James Hardi and Freud Diablo for all James Hardie fiber cement products and other fiber cement brand products The PCD triple chip design offers up to 60 times longer cutting life than standard carbide blades The laser cut thin kerf design gives fast and precise cuts with less dust and waste Anti-vibration design stabilizes the blade and reduces noise while cutting and Non-Stick Perma-Shield coating to reduce heat Freud's Limited Lifetime Guarantee