The Ko-ken RS4305A/10 1/2" Square Drive Socket Set is a versatile 10-piece collection tailored for deep socket applications. This set includes 12-point deep sockets in sizes 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", and 15/16", designed for easy engagement with fasteners and enhanced torque transfer. Each socket is crafted to ANSI standards and securely mounted on a 300mm rail for efficient organization and accessibility. Ideal for both professionals and DIY enthusiasts, this deep socket rail set provides reliability and performance for a wide range of fastening tasks.