Diablo, 10 Pack, 12" x 6-9TPI, Demo Demon Carbide General Purpose Reciprocating Blades, Specifically Designed For Both Wood & Metal, 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, s Ideal For Cutting Nail Embedded Wood & Ferrous Metal Applications.