SOCKET HOLDER RAILS Set of 6 socket storage rails.2 rails for 1/4" square drive sockets.2 rails for 3/8" square drive sockets.2 rails for 1/2" square drive sockets.Each rail will hold 14 square drive sockets.This set holds a total of 84 sockets.3 screw fixing holes per rail for wall mounting.Each rail is 400mm long.