This hand-operated mobile lamp holder is designed for small and medium-sized mobile performances. It has a net weight of 135KG, and can withstand a weight of 350kg. The height of the hanging lamp can be adjusted from 2.1m to 6.5m. The cross bar width is 0.6m, with a safety self-locking function. The height can be customized according to customer requirements. Advantages of this super heavy quadruped: low price, meeting general height requirements, simple use, and convenient transportation. Super strong bearing capacity, anti slip and anti loosening, easy to use, and large utilization space.