Part of the Sky Track rail system. The pantographs are designed to allow luminaires to be positioned at any height. This manual pantograph comes complete with a 5/8" male top adapter and a female bottom receiver. The load is supported by a 2mm steel cable. It extends from a closed length of 15" (38 cm) to a maximum extension of 12.5 feet (380 cm). The rotation of the coloured notched ring allows adjustment of the pantograph friction. As is, it can suspend a load of up to 26 lbs. Adding a type 4 blue spring counterweight will increase the suspension capacity to 40 lbs.