Ko-ken RS3010MZ/8-L75 3/8" Sq. Dr. 8-Piece Z-Series Hex Bit Socket Set features 75mm long hex bit sockets for extended reach and versatility. This set includes sizes 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm, and 12mm, all designed for a 3/8" drive. The Z-Series design ensures superior durability and grip, mounted on a 200mm rail for organized storage and easy access. Ideal for various fastening applications, this set combines robust performance with the precision of Z-Series technology.