Diablo, Demo Demon, 3 Pack, 12", General Purpose Carbide Reciprocating Blade, Specifically Designed For Both Wood & Metal, Exclusive Features Deliver Unmatched 50 Times Longer Life In Both Wood & Metal Cutting Applications, Oversized Blade Body, Variable Tooth Design & Perma-Shield Non-Stick Coating, Ideal For Cutting Nail Embedded Wood & Ferrous Metal Applications.