The Milwaukee Carbide-Grit Reciprocating Saw Blade is made from tungsten carbide to offer a long blade life. This blade features coarse grit for fast cutting. Milwaukee designs and manufactures SAWZALL blades for the toughest professional applications. Materials， tooth configuration， and heat treating are designed to maximize performance in specific cutting applications. Durability and endurance are the goals of every blade we make. This blade has a 1/2 in. universal tang that fits all SAWZALL Reciprocating Saws and standard competitive saws.