These inner tubes are made from durable, impermeable rubber. They help to retain air pressure and prevent air leakage in tyres of your sack trucks, hand trucks, wheelbarrows, etc. Suitable tyre size: 3.00-4 (260 x 85 mm); They help to retain air pressure and prevent air leakage in tyres of your sack trucks, hand trucks, wheelbarrows, utility carts, yard trailers, dollies, trolleys, wagons, lawn mowers, etc The spare inner tubes are suitable for residential, commercial and industrial use.Delivery includes 4 inner tubes., Weight: 1.8298367746 pounds, Manufacturer: vidaXL