Diablo DS0408CF3 Reciprocating Saw Blade, 8 TPI, Carbide Cutting Edge, Steel | The Diablo steel demon carbide-tipped reciprocating blades are the first carbide-tipped blades designed for extreme metal cutting, including high strength alloys, cast iron and stainless steel. This high-performance carbide-tipped blade delivers unmatched 50X longer cutting life than standard bi-metal blades in extreme thick metal cutting applications between 3/16 to 9/16 in.