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.