Diablo, steel demon, 3 pack, 6'', 8 tpi, carbide tipped, metal, reciprocating blade, designed for extreme metal cutting including high strength alloys, cast iron & stainless steel, high performance carbide tipped blade delivers unmatched 50 times longer cutting life than standard bi-metal blades in extreme thick metal cutting applications between 3/16" to 1/2", the increased blade body height produces straighter cuts with less vibration.