SAE, ¼” drive, 12 Point, Deep, Chrome Hand Sockets.    12-point (double-hexagonal) configurations: 12-point sockets can be used on square nuts and fasteners, and also offer double the amount of starting points. The design is normally only used for general purpose applications because it can greatly increase the chance 1/4 Sq. Dr. Socket 3/16 12 point Length 50mm