Diablo, 6-1/2'' x 4 Tooth, 5/8'' Arbor, Hardie Blade, Approved PCD Polycrystalline Diamond Tipped Fiber Cement, 5% Less Respirable Dust, While Delivering Long Life In All Fiber Cement Materials, Chip Design Offers Up To 60X Longer Cutting Life, Laser Cut Thin Kerf Design Gives Fast & Precise Cuts With Less Dust & Waste, Anti-Vibration Design Stabilizes The Blade & Reduces Noise While Cutting & Non-Stick Perma-Shield Coating To Reduce Heat.