Diablo's Demo Demon Carbide Teeth Reciprocating Saw Blades for General Purpose Cuts are the first blades on the market specifically designed for optimized cuts in clean wood, nail-embedded wood, metal and plastic. These blades include exclusive features that deliver unmatched 50X longer life in multiple material applications. With an oversized blade body for straight and rigid cuts, patented Variable tooth design for smoother and cleaner cuts, and Perma-SHIELD non-stick coating to help prevent gumming and corrosion, this blade is ideal for any general purpose project requiring a corded or cordless reciprocating saw.