Full polish nickel chrome plated. Turn down at base provides grip surface to pull sockets off ratchets. Double line to easily identify SAE sockets. Large hand stamped identification. Surface Drive® technology. Entry angle guides fastener. Serration depth as deep as the fastener holds fastener for ease of access. Set includes sizes: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8". Packaged on a rail. Drive size: 3/8''.