IRWIN 372966P5 Reciprocating Saw Blade, 6 TPI, Cobalt/Steel Cutting Edge,

Bi-metal construction and electronic beam weld for stronger; longer lasting teeth; for heavy duty and demolition applications in wood and metal. Use with materials 3/16″ (5mm) and thicker. Precision set teeth for faster; smoother cuts and 8 percent cobalt keeps teeth sharp longer.