Lift trucks move and lift loads to stack them or place them on high surfaces in warehouses and other industrial areas. Material lifts use telescoping masts to lift objects so they can be moved or positioned. Platform lift trucks have a platform that provides a stable, flat surface for smaller loads, bulk goods, or irregularly shaped items that are not stored on pallets or skids. Stackers have forks that slide underneath or into openings on pallets, skids, and containers.