Diablo's 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. Carbide tooth design for up to 50X cutting life in wood and metal applications Patented variable tooth technology provides faster cuts with less vibration Unique plunge tip design that enables faster starts and easier plunging Perma-SHIELD® non-stick coating helps reduce heat and friction for less gumming and corrosion 1" demolition body for straighter cuts with less vibration Ideal for cutting wood, nail-embedded wood, plastic and metal ranging between 1/8" and 3/8" thick