SKs high polish SuperKrome finish protects the tools from the harsh working environments found in todays workplace. All sockets feature SKs patented SureGrip hex design drives the side of the fastener, not the corner, to avoid edge breakage which can occur on rusted or damaged fasteners when a traditional straight cornered hex tool is used. Set Contains: 7.5 Pro Ratchet 1.5, 6 Extensions 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4 Standard Sockets 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8 Deep Sockets Packaged in a molded plastic case.