ICON™ Professional Impact 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. All ICON™ sockets have a 6 point design for maximum torque, chamfered socket openings for quick fastener engagement, and a thin wall design for easy access on difficult fasteners. All impact sockets feature a semi-shallow hex depth to keep the fastener near the end of the socket for more efficient work. 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™ hand tools, these sockets are backed by a hassle-free, manufacturer’s lifetime warranty.