Diablo, 7-1/4" x 4 Tooth, 5/8" Arbor, Circular Saw Hardie Blade, Approved PCD Polycrystalline Diamond Tipped Hardie Blade Generates 5% Less Respirable Dust, PCD Triple Chip Design Offers Up To 60 Times Longer Cutting Life Than Standard Carbide Blade, Laser Cut Thin Kerf Design Requires Less Power From The Saw, Causes Less User Fatigue & Ultimately Extends The Life Of The Saw, Anti-Vibration Design Stabilizes The Blade & Reduces Noise While Cutting, Non-Stick Perma-Shield Permanent Coating Prevents Gumming & Corrosion, Bulk.