MK Morse CSM72568TSC Metal Devil 7-1/4-Inch 68 Tooth Thin Steel Cutting Saw Blade with 5/8-Inch and Diamond Knockout Arbor Cut through solid steel plate in less than 12 seconds Hardened steel inner plate with unique combination tungsten carbide/titamium carbide tips brazed to the teeth Metallurgy of the carbide tips transfers minimal heat to the inner plate for cooler, cleaner, safer cutting Made in the USA