The Mibro Bi-Metal Reciprocating Saw Blade is made from ultra-premium M42 bi-metal material for the highest level of durability and heat resistance. The bi-metal has 8% cobalt which adds strength and toughness beyond standard bi-metal material. Use this saw blade for fast multi-material cutting in metal, wood and composites, including sandwiched materials like nail-embedded wood. The wide tooth of this blade is set at 8 teeth per inch (TPI) and it cuts aggressively fast while keeping the clear from material clogging and jams. The Mibro saw blade is warrantied against defects in manufacturing, workmanship, and materials.