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 chan 1/4 Sq. Dr. Aerospace 12 Point SAE Chrome Socket in 9/16