Diablos new Steel Demon Carbide reciprocating blades featuring 10 TPI are the first carbide teeth blades designed specifically for cutting medium metals and high strength alloys. This high performance carbide blade delivers an unmatched 50 times longer cutting life than standard bi-metal blades in medium metal cutting applications between 3/32 -inch to 1/4 -inch The blades 10 TPI provides cleaner/smoother cuts in metal. While the increased blade body height produces straighter cuts with less vibration.