Milwaukee, 6 TPI, WRECKER with Carbide Teeth SAWZALLยฎ reciprocating saw blade. Designed for cutting through metal, wood, and plastic. It has a carbide teeth that provide long life and durability. Offers up to 50X more life vs. bi-metal reciprocating saw blades available today. The Wrecker blade 6 TPI design allows for cutting into a wide variety of materials from clean wood to cast iron for quick demolition and remodeling work. The Fang Tip Design allows for faster plunge cuts into wood materials. Cuts longer, cuts more, and cuts faster than other carbide-teeth blades on the market.