The Ko-ken RS3405M/8 3/8" Square Drive Socket Set is an 8-piece flat drive socket collection designed for precision and reliability. This set includes 12-point sockets in sizes 8mm, 10mm, 11mm, 12mm, 13mm, 14mm, 17mm, and 19mm, all securely mounted on a 200mm rail for easy organization and access. The flat drive design enhances torque transfer while minimizing wear on fasteners, making this set ideal for a variety of professional applications. Engineered for durability and performance, this socket set is an essential addition to any toolbox, ensuring effective and efficient operation in fastening tasks.