You are Buying a brand New And Factory Sealed DIABLO Model #DS0910CF3, 9 in. 10 TPI Steel Demon Carbide Reciprocating Saw Blades for Medium Metal Cutting (3-Pack).. Product Overview 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 in. to 1/4 in. The blades 10 TPI provides cleaner/smoother cuts in metal. While the increased blade body height produces straighter cuts with less vibration. High performance carbide for greater durability and 50X cutting performance in medium metal applications Enhanced carbide to blade connection for extreme impact resistance 10 TPI tooth geometry for clean/smooth finishes on medium metal applications 1 in. oversized blade body for straighter cuts with less vibration Perma-shield non-stick coating for less heat and friction Ideal for cutting ferrous metals and high strength alloys between 3/32 in. to 1/4 in. Compatible with all corded and cordless reciprocating saws Carbide blade ideal for medium metal cutting 1/16in-5/16in thick Carbide teeth for 50x longer life vs. standard bi-metal blades.