Product Details: Name: Elbow Valve Extension Applicable: American style valve Product Material: Pure Copper Product Angle: 45°, 90°, 135° Product Size: Bottom outer diameter 10mm, head outer thread 8mm Scope of application: cars, battery cars, bicycles, balance cars, etc. Features: [Adjustable angle for easy use] With a variety of angle options (45 degrees, 90 degrees and 135 degrees), you can choose the most convenient extension and easily access the tire valve. This flexibility ensures that you can easily inflate or check tire pressure. [Easy to install] The adapter screws securely onto your existing tire valve, and its right-angle design ensures that you can easily use a pump or air tube. This feature helps protect your original tire valve and extend its service life. Product Includes: 1*Tire Valve, 3*Tire Valve Note: Please allow slight size errors due to manual measurement; please allow slight color errors under different monitors.