Electronic beam weld for stronger, longer lasting teeth. 8% cobalt keeps teeth sharp longer. Use with materials 1/8 to 1/2 inch (3.2 - 13 mm) thick. Cuts all metals including non-ferrous, pipe, conduit, stainless, and sheet metal. Bi-metal construction for faster cutting and added durability. Precision-set teeth for faster, smoother cuts. IRWIN Tools Metal Cutting Reciprocating Saw Blade, 6-Inch, 24 TPI (372624)