Diablo, steel demon, 3 pack, 6", 10 tpi, carbide tipped medium metal reciprocating blade, designed specifically for cutting medium metals & high strength alloys, high performance delivers an unmatched 50 times longer cutting life than standard bi-metal blades in medium metal cutting applications between 3/32" to 1/4", blades 10 tpi provides cleaner/smoother cuts in metal, while the increased blade body height produces straighter cuts with less vibration.