Diablo Demo Demon, 5 Pack, 6" x 8/14T, Bi-Metal, Reciprocating Saw Blade, For General Purpose Cutting Nail Embedded Wood & Metal Applications, Bi-Metal Technology That Delivers Up To 4 Times Longer Life Of Standard Blades, Perma-Shield Coating Protects Blade From Heat, Gumming & Corrosion, Tip Design That Enables Faster & Easier Plunging.