These ICON™ Professional Deep Impact Sockets are made to keep the fastener near the end of the socket for more efficient work. The premium heat-treated chrome-moly steel has a durable black phosphate finish for superior strength and corrosion resistance. This socket set has high-visibility stamped size markings for easy identification. Like the rest of the ICON™ tools, these sockets are backed by a hassle-free, manufacturer’s lifetime warranty.