Load capacity and durability - Up to 6600 lbs capacity when using 4 wheels. The leveling feet are reinforced to increase overall strength and durability, enabling the transport of heavy equipment. Built with a sturdy structure and flexible functionality for a range of tasks. Wheel performance - 75 mm nylon wheels provide smooth, stable rolling with full 360-degree rotation, allowing easy movement over different surfaces with confident handling. Height adjustment - A ratchet arm enables easy height adjustment. The ergonomic design increases efficiency and reduces the effort required to adjust the height of the retractable leveling roller. Versatile applications - The leveling roller with base supports height adjustment is suitable for industrial and home use, from heavy furniture to appliances such as workbenches, shelves and mechanical cabinets. Use scenarios - Workshop or factory: Move and position heavy equipment or machine tools with four wheels, then adjust the height to align with work surfaces or docking points. - Home garage or workshop: Reposition a heavy workbench or appliance on an uneven floor, using the wheels for transport and the height adjustment to create a level, stable surface. - Office or retail: Reorganize heavy shelving or display cabinets by rolling them to a new location and fine-tuning height for level alignment on varied floor finishes.