EZARC Professional Carbide Oscillating Saw Blade Heavy Duty for Hard Materials User Insight Traditional HCS and Bi-Metal flush cut blade can only cut soft materials, teeth are easy to wear out when cutting hard material such as Hardened Nails, screw or reinforced fiberglass. Users are always complain the terrible lifetime of bi-metal blades on metal applications. EZARC Solution EZARC Carbide blade lasts 30 times longer versus a conventional bi-metal option in metal, the high performance carbide teeth allows you to cut through concrete nails, stainless steel, cement board, fiber glass, sheet metal, hardwood with ease. Specification: Teeth Material: Tungsten Carbide Cutting Width: 1-3/8" (34mm) Cutting Depth: 1-3/5" (40mm) Accessories: B-Brand and D-Brand adapters