1. [Widely Used] This 4.80/4.00 - 8 inner tube is fully suitable for household, garden or other general-purpose scenarios. It can be used for lawn mowers, wheelbarrows, hand trucks, garden carts, snow blowers, flatbed carts, yard trailers, trolleys, etc. 2. [JK Feature - Unicycle Inner Tube 4.80/4.00 - 8] This heavy-duty replacement inner tube is made of high-quality rubber, with better air tightness and anti-aging performance. The 4.80/4.00 - 8 inner tube is very durable. 3. [Safety Feature - 4.80/4.00 - 8 Inner Tube] The maximum inflation pressure of the straight valve inner tube is 30 pounds per square inch. Only a manual pump can be used for inflation to avoid over - inflation. It is not suitable for road use. 4. [Easy to Install - 4.80 x8 Inner Tube] This heavy-duty inner tube is easy to install. When the tire is flat, there is no need to buy a new tire. Just replace the inner tube and it can be used continuously. During installation, put the inner tube in water to check if it is completely sealed. If there are bubbles, it means the inner tube is damaged. 5. Dimensions: 4.80/4.00 - 8 inches Feature: Inflated by manual pump Maximum inflation pressure: 30 pounds per square inch 6. Color: Black Material: Rubber Package contents: 2 tires Only the above package contents are included, and no other products are included. Note: Lighting during shooting and different monitors may cause slight differences between the color of the item in the picture and the actual object. The allowable error for dimensions is +/- 1 - 3 cm.