【2200LBS Heavy Duty Load Capacity】Our industrial leveling casters are made of thickened steel structure and premium nylon wheels, supporting up to 2200lbs total load, perfect for workbench, machinery, equipment and heavy furniture. 【Adjustable Leveling Feet for Stability】Built-in height adjustable leveling pad design allows precise leveling on uneven floors, keeps your workbench stable and balanced, no wobbling or shaking during use. Using the ratchet handle can easily adjust the height of the caster.The maximum adjustment height is 8 mm / 0.3 inch. 【360° Swivel Caster for Smooth Movement】Equipped with precision ball bearings, the swivel caster ensures smooth and quiet rolling, easy to move heavy equipment and workbench anywhere you need. 【Sturdy & Durable Industrial Construction】Anti-rust, anti-bending and wear-resistant steel housing with solid top plate, designed for long-term heavy duty use in workshop, garage, factory and laboratory. 【Wide Application & Easy to Install】Ideal for workbench, machine tools, laboratory equipment, cabinet, pool table and various industrial furniture. Including installation accessories bolts and nuts for easy installation. Leveling Casters Wheel with Ratchet Handle(Green) Height Adjustable Plate Casters Set of 4 Total Load Capacity 2200 Lbs Heavy Duty Industrial Retractable Workbench Casters