The Ko-ken RS3400M/8 3/8" Square Drive Socket Set is an 8-piece collection designed for efficiency and durability. This set features 6-point sockets in sizes 8mm, 10mm, 11mm, 12mm, 13mm, 14mm, 17mm, and 19mm, ensuring a secure grip on fasteners. Each socket is mounted on a 200mm rail for easy organization and access, making it a practical addition to any toolbox. Engineered for high performance, this socket set is perfect for a variety of applications, providing the reliability and precision needed for both professional and DIY projects.