The 4.00-8 PU foam flat free wheels are mainly used for wheel barrow, hand trucks, tool cart, garden wagon, lawn lower, etc. Its advantages are as follows:

1. LIGHTWEIGHTING - The porous structure inside the foamed material results in a low density and an overall weight significantly lighter than that of traditional rubber or plastic wheels.

2. Excellent shock absorption - The elastic structure of foams absorbs shock and reduces vibration on bumpy roads. When using foam wheels on skateboards or prams, it can enhance the comfort of use and reduce the impact on hands or body.

3. Quietness - Foam wheels are softer than hard wheels (e.g. plastic wheels), so they roll with less friction on the ground. Library trolleys or office luggage can avoid noise disturbance by using foam wheels, which is suitable for environments that need to be quiet.

4. Balance between wear resistance and cost - High-density foams such as polyurethane are highly resistant to wear and tear while remaining lightweight, resulting in a longer lifespan in everyday use. In addition, foam wheels usually cost less to produce than rubber wheels, making them cost-effective and suitable for budget-sensitive products.

5. Good anti-slip performance - Foam wheels have a high surface friction, especially on smooth floors (e.g. tiles, wooden floors) providing a stable grip and reducing the risk of slipping. For example, supermarket trolleys or medical equipment trolleys are more safety conscious.