Feature:1. Heavy load, large bearing capacity, suitable for large machine movement.2. Including 4pcs of the package, more convenient to use and install.3. Nylon material manufacturing ensuring maximum durability, long service life.4. Allows for moving equipment to the desired location, sturdy and high strength.5. Excellent performance, great for moving work tables, weld tables, or heavy equipment.Specification:Condition: 100% Brand NewItem Type: Level Adjustment CasterMaterial: Nylon Wheel Diameter: Approx. 50mm / 1.97inWheel Width: Approx. 24mm / 0.94inInstallation Height: Approx. 82mm / 3.23inRotation Radius: Approx. 38mm / 1.5inTotal Load: 500kg / 1102.3lb(approx.)Single Wheel Load: 250kg / 551.2lb(approx.)Note: The general total weight is calculated based on the load of the two wheelsPackage List:4 x Level Adjustment Caster