The Ko-ken RS4300M/10 1/2" Square Drive Socket Set is a robust 10-piece collection designed for deep socket applications. This set features 6-point deep sockets in sizes 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 17mm, 19mm, 21mm, and 22mm, ensuring a secure fit and optimal torque transfer. Crafted to meet high-quality standards, each socket is mounted on a 300mm rail for easy organization and quick access. This deep socket rail set is an essential tool for professionals and DIY enthusiasts alike, providing versatility and reliability for a variety of fastening tasks.