TR413C Color Tubeless Tire Valve Colorful Aluminum Sleeve Tire Valves 1.100% leak tested and are made of only the highest quality materials. 2. Material: brass stem or zinc alloy stem, natural rubber or EPDM rubber. 3. EPDM rubber of valve is specifically designed for resistance to o-zone and oxidants, testing about severe temperature and weather conditions. 4. Chrome sleeves and colorful aluminium &brass sleeves for snap-in valve can be selected. 5. The snap-in type can be quickly mounted. 6. Best quality with reasonable price. 7. Each valve is tested under standers of E.T.R.T.O and DIN78030. 8. It is flexible in nature so it may provide complete air-seal even when it is bent for tire service or tire pressure check.