Diablo, 9'' x 10TPI, Carbide Tipped Medium Metal Steel Demon Reciprocating Blades, Designed Specifically For Cutting Medium Metals & High Strength Alloys, High Performance Carbide Blade Delivers An Unmatched 50x Longer Cutting Life, Medium Metal Cutting Applications Between 3/32" To 1/4", The Blades 10 TPI Provides Cleaner/Smoother Cuts In Metal, Increased Blade Body Height Produces Straighter Cuts With Less Vibration.