The Ko-ken RS3430M/6 3/8" Square Drive Universal Bit Socket Set is a 6-piece collection designed for versatility and convenience in fastening tasks. This set includes hex bit sockets in sizes 5mm, 6mm, 7mm, 8mm, 10mm, and 12mm, all securely mounted on a 150mm rail for easy organization and accessibility. Featuring a un 6 Piece 3/8 Sq. Dr. Universal Hex Bit Socket Set