Diablo, 5 pack, steel demon, 6", 20/24tpi, reciprocating saw blade, specifically designed for maximum performance in metal cutting applications, the blade's ultra-hardened cutting edge delivers up to 5 times longer life than those of standard blades, dual tooth design features a double tooth configuration with small gullets for faster material removal & extra durability, perma-shield nonstick coating protects from corrosion while reducing friction & heat.