This combination of features is truly unique. It is the only track designed not to open even under heavy loads. Designed for transporting small packages, boxes, cartons & tote containers. They can, be used as part of storage areas, in packing stations, assembly areas, for machine feeding etc. They can also be used as side guides on conveyors. The 42mm w x 33mm h zinc plated track is supplied in 3007mm lengths and will not distort under load. The pitch is 33mm and the 25mm dia. rollers are high-density polyethylene with a steel axle with a low rolling co efficient of friction and are extremely silent. Operating temperature: -35°C to +40°C. Max. Load per roller: Static/Dynamic: 12/8kg