The Ko-ken RS2305A/9 is a 9-piece 1/4" Sq. Dr. 12-Point SAE Deep Socket Set, designed for accessing deep fasteners with precision. The set includes sockets in sizes 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", and 1/2". Each socket features a 12-point design for a secure grip and efficient torque transfer. The sockets are mounted on a 200mm rail, ensuring organized storage and easy access.