Product Description For crimping round metal pipe to create a male fitting end. Optimal handle span for maximum power and comfortable operating range. Crimps heavier gauge pipe. From the Manufacturer Super Sawzall blades are made with Matrix II high-speed steel teeth containing 8% cobalt to keep a sharper tooth edge longer. The tough bi-metal design allows faster-cutting, longer-life blades that can bend without shattering. 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. Durable, long-life blades are the goal of every blade we make. This blade has a 1/2-inch universal tang that fits all Sawzalls and standard competitive saws. The pack includes 50 individual blades.