Diablo, 12'' x 6-9TPI, Carbide Tipped General Purpose Demo Demon Reciprocating Blades, Specifically Designed For Both Wood & Metal, Include Exclusive Features That Deliver Unmatched 50x 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.