You are Buying a brand New And Factory Sealed DIABLO 6 in. 10 TPI Steel Demon Carbide Reciprocating Saw Blades for Medium Metal Cutting (3-Pack)....  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.