Valve extension, this product easily connects the tire valve to the inner and outer wheels, and can extend the tire valve by 200mm. The outer diameter of the rubber tube is 9mm. The tire valve extension is made of high-quality brass and rubber, sturdy and durable. Not easy to be damaged or aged, with reliable quality and long service life. Easy to carry. This valve extension extends the length of your valve so that you can inflate your tires quickly and safely. The small hidden air valves on the wheels can provide great help and relief when aerating. Suitable for all types of vehicle tires equipped with standard valves. The built-in valve core is made of pure copper, which has strong sealing performance, high density, is not easy to age, and has more stable performance. Lightweight and portable: The stem is compact and light, easy to carry, small in size, and easy to store in the car or at home. Note: The data are all measured manually, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.