Milwaukee® designs and manufactures SAWZALL® blades for the toughest professional applications. Material, blade geometry and heat treating are designed to maximize general purpose cutting performance. All-purpose blade can cut through multiple materialsMaterial, geometry and heat treating maximize performanceMatrix II bi-metal teeth for greater durabilityThin kerf for flexible cutsCuts woods, nail embedded woods, composition material, plastic, ferrous and non-ferrous metals, and cast iron1/2 in. universal tang fits all SAWZALLs12 in. length8/12 teeth per inch