Diablo DS0414BF5 Reciprocating Saw Blade, 14/18 TPI, Bi-Metal Cutting Edge, Steel | Diablo demo demon reciprocating saw blades are specifically designed for maximum performance in general-purpose (nail-embedded wood and metal) applications. These high performance blades feature bi-metal technology that delivers up to five times longer life of standard blades on the market. Diablo patented variable tooth technology provides faster cuts with less vibration.