The Ceiling Rail System ultra long stretching length can reach 43-200cm, which can be freely adjusted within this range, and can be adjusted to a suitable angle for live streaming and light filling,it is Highly flexible and flexible | The Ceiling Rail System's pantograph adopts steel wire with constant force, which is sturdy and durable, and can easily achieve up and down expansion and contraction freedom. When not in use, it can be retracted to save space and avoid troubles caused by messy lamp holder wires | The Video Light Mount Support kit with good load-bearing capacity and a maximum load-bearing capacity of 15kg, suitable lighting fixtures can be used for matching. Equipped with clip wires, the moving light wires of the lighting fixtures are no longer tied, and safety ropes are used to bind the lighting fixtures and lifting arms to protect the lighting fixtures, ensuring safety and reliability | The pantograph can be freely paired with the lighting fixtures on the ceiling track system of the studio to achieve free lighting. It is widely used for lighting in studios, stages, live broadcasts, studios, and conference rooms | Kit includes: Telescopic boomx1, Safety wirex1, Expansion Screwx10 ,switch headx1, T-shaped hanging platex2, clampx8. NOTE:The Ring light NOT included