Feature: 1. Fitment: The 4.10 3.50‑6 tire inner tube with TTR87 metal bend valve is suitable for 4 Inch rims with 3.5‑4.1in width, replacement for wheelbarrows, garden and utility carts, lawn mowers, tractors. 2. Shock Absorption: The high impact damping effect ensures that whether you are riding on the bumpy and sunken sections can be driven normally. 3. Explosion Proof: Made with thick and shock absorbent rubber, these inner tubes prevent explosive punctures with their self sealing properties. 4. Rubber Material: Made of premium rubber, the internal structure is stable, and has strong flexibility, which can fully meet the international standard air pressure. 5. Practical: This rubber inner tube is ready for any possible puncture and is suitable for both front and rear tires with suitable size, and easy to install. Specification: Item Type: Tire Inner TubesMaterial: Rubber, metal .Tube Size: 4.10/3.50-4Tube Valve Stem: TTR87 metal bend valveApplication: Suitable for 4 inch rims with 3.5‑4.1in widthFitment:Replacement for wheel barrows, garden and utility carts, lawn mowers, tractors, hand trucks, trailers, dollies, trolleys, wagons, generators, snow blowers, pressure washers, air compressors, wood chippers and more Package List: 2 x 4.10 3.50‑4 Inner Tube Note: Only hand pump can be used to inflate to avoid overfilling.Not suitable for highways.