7-1/4" 24 Tooth, Micro Grain C3 Carbide Tipped Marathon Pressure Treated Lumber/Deck Saw Blade, Universal Arbor Hole, Aggressive 23 Degree Hook Angle For Faster Cutting, Deep Gullets Remove Debris Quickly To Reduce Heat For Longer Life, Coating Reduces Pitch & Build Up For Pressure Treated Wood, Carded.