For light energy supply systems with 1 to 3 cables. For applications which do not allow the installation of C-rails. Suitable for indoor and outdoor use. Trolley design: Flat cable trolleys with one or two rollers with a support diameter of 50 and 80 mm [1.97" and 3.15"]. Round cable trolleys with one or two rollers with hook for cable collars or ball joint for cable clips. Ideal control unit trolley. Load capacity: up to 20 kg [44 lb] per trolley Max system length: 100 m [330 ft] Track