Conveyors are used when material is usually to be moved frequently between specific points over a fixed route and when there exists a sufficient flow quantity to justify the fixed conveyor investment. Different types of conveyors can be characterized by the type of product being dealt with: unit load or bulk load; the conveyor’s area: in-floor, on-floor, or overhead, and whether loads can accumulate on the conveyor. Accumulation enables intermittent movement of every unit of material transported along the conveyor, while all models move concurrently on conveyors without accumulation capability. For instance, while both roller and planetary gearbox flat-belt are unit-load on-floor conveyors, the roller provides accumulation capability as the flat-belt will not; similarly, both the power-and-free and trolley are unit-load overhead conveyors, with the power-and-free made to include an extra track in order to supply the accumulation capability without the trolley conveyor. Examples of bulk-handling conveyors include the magnetic-belt, troughed-belt, bucket, and screw conveyors. A sortation conveyor system can be used for merging, identifying, inducting, and separating items to end up being conveyed to specific destinations, and typically contains flat-belt, roller, and chute conveyor segments together with various moveable arms and/or pop-up wheels and chains that deflect, push, or pull items to different destinations.