These Klein Tools High-Leverage Ironworker's Pliers have induction hardened side-cutting knives for improved durability and a longer lifespan. They have heavy duty knurled jaws and a spring-loaded self-opening on hot-riveted joint for smooth, easy, and powerful action. The high-leverage design with ''handform'' handles and the rivet being closer to the cutting edge allows for 46 percent more cutting and gripping power.