UniCarriers Americas Corporation (UCA) has released two stacker models, the Platinum WSX walkie straddle stacker and the Platinum WCX walkie counterbalance stacker. Both models are built for high performance and easy maintenance, and have capacities of 3,000 lb (1,361 kg) and 4,000 lb. (1,814 kg), with lift heights up to 18 ft (5.5 m).

The WSX is a versatile, hard-working straddle stacker that easily operates in tight aisles with heavy loads, while  the WCX counterbalance stacker is built to handle heavy loads and reach higher heights, to do the job of larger and more expensive sit-down rider models. The WCX is ideal for manufacturing and other demanding applications.