7-1/4", 48 Teeth, Ferrous Metal Cutting, Blade, 5/8" Arbor Only, Does Not Have Diamond Knockout, Best In Class Life, Unique Seated Tip Design Minimizes Tip Loss Through Braze Failure, Premium Carbide Resists Chipping From Impact & Maintains A Cutting Edge Longer, Optimized ATB Tooth Grind Gives A Smooth Cutting Action, With Best In Class Life & Speed.