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 332 To 14, The Blades 10 TPI Provides CleanerSmoother Cuts In Metal, Increased Blade Body Height Produces Straighter Cuts With Less Vibration