Neiko 01137B 1/2-Inch Drive SAE Allen Hex Impact Socket Set, 1/4 Inch - 3/4 Inch, Cr-Mo | 8-Piece Set A FULL RANGE SET: A complete set of sturdy SAE Allen and hex bit sockets for construction and automotive use BUILT TOUGH: Made of high-grade Chrome-Moly steel with black phosphate finish that resists corrosion SECURE RETENTION: Sockets designed with a pin hole for use with pin and O-ring systems for secure socket retention COMMON SIZES: Includes Standard sockets 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 3/4 inch ORGANIZING CASE: Set includes a hard plastic storage case