Ko-ken RS3027/5-L50 3/8 Sq. Dr. Ribe-CV Bit Socket Set, M5-M12. This 5-piece set features Ribe-CV bit sockets designed for durability and precise fastening. The set includes sizes M5, M6, M8, M10, and M12, each with a 50mm length. The sockets are mounted on a 150mm rail for convenient organization and easy access. With a 3/8" drive, this set is ideal for tasks requiring Ribe-CV fasteners, ensuring a secure fit and reliable performance.