Carbide teeth for 50X life over bi-metal recip blades;Cuts black pipe, angle iron, rebar, stainless steel, and more;8 TPI for fast, smooth cuts in thick and extreme metals;Carbide teeth for longer life, greater material versatility, and faster cuts;1in tall blade for better durability;1/2" universal tang;Large tooth gullets for easy material ejection;Available in 1, 3 and 5PKs;9” 25PKs;Made in USA