4pcs Level Adjustment Casters GD 40F Heavy Duty Industrial Roller Wheel Leveling Casters BlackFunction:1. Heavy load, large load capacity, suitable for large machine movement. 2. Including 4 pieces package, more convenient to use and install. 3. Nylon material for maximum durability, long service life. 4. Allows you to move equipment to your desired location, rugged and high strength. 5. Excellent performance, perfect for moving work tables, welding tables or heavy equipment. Specification:Condition: 100% Brand New Item Type: Caster Level Adjustment Material: Nylon Color: Black Wheel Diameter: Approx. 40mm / 1.57in Wheel Width: Approx. 20mm / 0.79in Mounting Height: Approx. 70mm / 2.76in Swing Radius: Approx. 31mm / 1.22in Total Load: 100kg/220.5lb (Approx.) Single Wheel Load: 50kg/110.2lb (Approx.) Note: The overall total weight is calculated based on the load of two wheels Package List: 4 x Level Adjustment Wheels