Model Number: 4.00-8-#9057 Key Specifications/Special Features: Advantages of PU wheelSolid polyurethane wheels are widely used for wheelbarrow, lawn cart, hand trolleyMore economic and environmental than rubber wheelsGood in resilience and can be made in different coloursLightweight and durableBoth heat and cold resistant and excellent in elasticityResistant to water, oil, dirt, acid and alkali