The junior offset arm witha junior pin and receiver , can offset a large light fixture from its stand . It mounts to a stand with a junior pin top , witha junior receiver it allows a light to be mounted eithe r over or under (a safety linchpin is attached). An additional junior receiver is welded for an extra lighting fixture or an umbrella while working on a rainy day. This 18.5″ (47cm) arm consists of a junior pin (stud ) on one side and a junior receiver on the other. It is used to position a light fixture or accessory away from the light stand . Perfect for hiding your light stand behind a background or set wall. Tethe red safety pin included.