The Diablo steel demon carbide strip reciprocating blades are designed for extreme thin metal cutting including high strength alloys, cast iron and stainless steel. This high performance carbide strip blade delivers unmatched 20 times longer cutting life than standard bi-metal blades in thin metal cutting applications less than 3/16 inch. Ideal for cutting stainless steel, cast iron and other high strength alloysSpecially formulated carbide for increased hardness to deliver longer cutting lifeCarbide strip teeth are milled to perfection for smoother quality cutsPerma-Shield non-stick coating for less heat and friction20 tooth blade6 in.