The Milwaukee 5-piece Carbide Teeth SAWZALL Blade Set provides your true demolition blades, equipped with Carbide Teeth. Carbide Teeth helps deliver 50X longer life than standard bi-metal blades. (2) 9” Carbide AX blades allow for longer life in wood with nails and give users the ability to cut through hardened fasteners such as deck screws and fluted masonry nails. A Fang Tip™ design allows for fast plunge cutting, and the 5TPI blade design provides users the fastest cutting blade in wood with nails. There are (2) 9” 8TPI next generation design Carbide TORCH blades, and (1) 6” 8TPI TORCH blade. These give users the most durable tooth design, and up to 70% longer life than our first generation carbide thick metal blade. These blades are recommended for cutting materials thicker than 3/16”.