This extra heavy duty scenery carrier has a safe working load of 385 kg (848 lbs.) It has a robust 'U' shaped body with stiffening webs at each end. There are 8 ball raced unflanged wheels fitted to the carrier. The four main wheels which are polyurethane tired and run between the top and bottom webs of the Unibeam, while the 4 side wheels keep the carrier lined up with the track center . It can be used on both straight and curved track systems in silence. The carrier can be used in conjunction with the scenery attachment clamp TRA8004. All the wheels are bolted to the bodywork of the carrier. The finish is black. Used with Unibeam only.