Professional tool for commercial or occasional use Manufactured from chrome vanadium steel for strength and durability Highly polished stainless-steel clips Spring tension clips for added strength and to prevent the sockets from falling off so easily Solid steel construction of the rack for added strength Holds all types of 1/4" / 3/8" and 1/2" sockets Suitable for keeping your sockets organised in a tool box or the item comes with a swivel handle for transporting or for hanging up on walls or flat surfaces DIMENSIONS OF THE RACK - 15cm x 42mm - 4 socket rails WILL HOLD THE FOLLOWING NUMBER OF SOCKETS - 30 x 1/2" Drive sockets - 30 x 3/8" Drive sockets - 20 x 1/4" Drive sockets