This universal trolley fits under almost any light stand or camera tripod. That way the passport photograph camera on a stand, or the studio flash unit on a lamp stand can easily be moved. The screw clamps where the stand legs need to be placed are slidable so almost any stand will fit. The maximum load is 50Kg. The trolley can also be stored compactly using the supplied bag because its legs can be folded towards each other. The wheels are lined with rubber to prevent possible scratching of the floor.