IRWIN Tools Reciprocating Saw Blade, Metal- and Wood-Cutting, 12-inch, 10 TPI (372110B) 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. Cuts composition materials, plastic, pipe, carbon steel, and stainless steel. Use with materials 1/8- to 1/2-inch thick. (3.2 to 13 mm) to