Weld-Tec, 7-1/4", 40 Tooth, Carbide Tipped, Circular Saw Blade, 5/8" Diamond Arbor, Carbide Teeth Are Welded Not Brazed Resulting In Stronger Tooth Bond, Longer Life & Durability, UC2 Carbide With Sub-Micro Grain Is Tougher Than Standard Carbide, Stays Sharp Longer & Offers Best In Class Cut Quality, Innovative Heat Vents & Expansion Slots Help Make Straighter Cuts, Reinforced Shoulder Provides Durability For Trim/Finish Application, Clam Shell.