Diablo's new Demo Demon carbide general purpose reciprocating blades are the first on the market specifically designed for both wood and metal. These blades include exclusive features that deliver unmatched 50 times longer life in both wood and metal cutting applications. With an oversized blade body, variable tooth design, and PERMA-SHIELD non-stick coating, this blade is ideal for cutting nail-embedded wood and ferrous metal applications with a 3/32 in. to 1/4 in. thickness.