Diablo steel demon, 2 pack, 9 "x 14/18 tpi, reciprocating blade, bi-metal liquid metal tooth design, lasts up to 4 times longer than standard blades, for cutting steel & metal composites 3/32" x 5/16", features perma-shield non-stick coating & liquid metal technology for maximum durability & speed, specifically designed for maximum performance in metal demolition applications.