ICON™ Professional Impact Swivel Sockets are designed to stand up to professional shop use. We use a premium heat treated chrome moly steel, with a durable black phosphate finish that offers superior strength and corrosion resistance. These swivel impact sockets’ joint design provides easy access to hard-to-reach nuts and bolts. We’ve also added easy to read size markings, and included a premium storage tray to help keep your tools organized. Like the rest of the ICON™ tools, these sockets are backed by a hassle-free, manufacturer’s lifetime warranty.