Diablo Steel Demon, 5 Pack, 9 " x 8/10 TPI, Reciprocating Blade, Bi-Metal Liquid Metal Tooth Design, Lasts Up To 4 Times Longer Than Standard Blades, For Cutting Steel & Metal Composites 1/8" x 1/2", Features Perma-Shield Non-Stick Coating & Liquid Metal Technology For Maximum Durability & Speed, Specifically Designed For Maximum Performance In Metal.