IRWIN Tools Reciprocating Saw Blade, Wood- and Nail-Embedded Wood-Cutting, 6-Inch, 6 TPI 5 Pack (372606P5) Electronic beam weld for stronger, longer lasting teeth. 8% cobalt keeps teeth sharp longer. Bi-metal construction for faster cutting and added durability. Precision-set teeth for faster, smoother cuts. Great for roughing-in work and fast-cutting wood, composition materials, and plastic Use with materials 3/16-inch (5mm) and thicker.