The Ko-ken RS2405A/9 is a 9-piece 1/4" Sq. Dr. Socket Set with 12-point sockets, designed for precision and durability. Covering sizes from 3/16" to 1/2", this set includes sockets in 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", and 1/2". The sockets are mounted on a 150mm rail for organized storage and easy access. Ideal for tasks requiring a secure grip and efficient torque transfer.