Diablo, 12" 'x 10TPI, Carbide Tipped, Medium, Metal, Steel Demon, Reciprocating Blade, Are The First Carbide Teeth Blades Designed Specifically For Cutting Medium Metals & High Strength Alloys, This High Performance Carbide Blade Delivers An Unmatched 50x Longer Cutting Life Than Standard Bi-Metal Blades In Medium Metal Cutting Applications Between 3/32" To 1/4", The Blades 10 TPI Provides Cleaner/Smoother Cuts In Metal, While The Increased Blade Body Height Produces Straighter Cuts With Less Vibration.