🏠RailThinkEdge 550/600mm Ball Bearing Rail KitOn this pageThinkEdge 550/600mm Ball Bearing Rail KitThinkEdge 550/600mm Ball Bearing Rail KitNoteThe rail kit you have might look slightly different from the illustrations in this document.The rail package contains the following items:1 Document2 Left rail3 Right rail4 Two M6 screws and two M3.5 screws