• 【About Size】: 4.80/4.00-8 Tube is suitable for tire rim diameter 8 inches, tire section width 4.00-4.80 inches, valve TR13 Note: To ensure a seamless replacement, please check the size of your existing tire sidewall, hub, and bearings before purchasing Tire size is usually displayed on the side of the outer tire • 【Wide Application】: Suitable for various vehicles such as unicycles, agricultural machinery, tillers, lawn mowers, hand trucks, wheelbarrows, garden trailers, carts, wagons, snow blowers, washing machines, air compressors, generators, go-karts, wood splitters, etc • 【Thick Design Super Durability】: Designed for handcarts, the 4.00-8 thick-walled bike tube with a thickness of 2mm adopts high-quality butyl synthetic rubber, which can absorb impact, shaking, and dents, ensuring stable and safe riding This pipe is durable and resilient so it can handle your adventures without compromising performance or safety • TR13 Straight Valve Bar: Rubber coated valve bar strengthens the valve seal, preventing sand and dust from entering the tubes and tires The robust rubber valve stem sheet also has tear resistance, extending the valve life • 【Budget savings】: Doing it yourself saves more budget compared to going to a local shop and getting the tires changed As a spare tube, it can prevent the unpleasant situation of being unable to drive after the tube bursts Note: If you do not know how to install it, you can inquire the relevant installation video before installation to save time