The Ko-ken RS3445W/7 3/8" Square Drive Universal Whitworth Socket Set is a 7-piece collection designed for versatility in fastening applications. This set includes 12-point universal Whitworth sockets in sizes 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", and 1/2", all securely mounted on a 200mm rail for easy organization and accessibility. The universal design allows for a degree of rotation, enabling these sockets to adapt to a variety of fastener shapes. Crafted for durability and reliability, this universal Whitworth socket set is an essential addition to any professional toolbox, ensuring effective performance in a wide range of tasks.