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.