In general material handling applications in warehouses, loading docks, and distribution centers, stackers (AKA manual forklifts) are used to lift and stack items. Usually characterized by the fork in front and a steering handle in back that features operating controls, stackers are operated by a person who walks behind them and guides them into position. Electric stackers and hydraulic stackers feature power assists for maneuvering and lifting. These products are often supported by a variety of hydraulic lift kits and lifting equipment accessories .