The Diablo 9" 6/9 TPI Demo Demon Carbide Teeth Reciprocating Saw Blades for General Purpose Cuts are the first on the market specifically designed for optimized results in wood, nail-embedded wood, plastic and metal. These blades include exclusive features that deliver up to 50X longer life compared to standard bi-metal blades on the market. With an oversized blade body, patented Variable Tooth Design, and Perma-SHIELD non-stick coating, this blade is ideal for cutting nail-embedded wood and demolition metal applications between 1/8" and 3/8" thick.