1.[4.10/3.50-4 Inner Tube] The inner tube is made of high-quality rubber material, which is resistant to high temperature, wear-resistant and durable. Replacement Tube for 10" Outside Diameter Tire. 2.[High Toughness] The tire has excellent toughness and is not easily deformed. This will give you a better experience. Tire Tube with Bent Metal TR87 Stems. 3.[Good Sealing Performance] The air valve of the trolley tire has good sealing performance and does not need to be inflated frequently. 4.[Easy To Use] This kart inner tube is easy to install, so it is a good replacement for old or damaged inner tubes. With thick rubber that absorbs vibrations, it brings you a comfortable and stable driving experience. 5.[Wide Use] This inner tire is widely used in trolleys, tool carts, karts, etc. It is very suitable for home, professional and commercial, industrial use.