Features: The TR416 Tubeless Tire Valves Stem features metal construction with advanced leak proof technology, ensuring corrosions resistance and reliabled pressure maintenance for long term driving safety. Engineered for universally compatibility with most standard rims, this vacuum tire valves stem offer tool less installation and a secure fit, eliminating air leakage risks in tubeless tires. Ideal for car enthusiasts, motorcycle riders, and DIYer users seeking hassle less tire maintenance solution during frequent tire changes or vehicle upgrades. Performs exceptionally in extreme weather conditions and high speed scenarios, maintaining optimal tire pressure during trips or prolonged vehicle storage. Its reinforced metal cores and precise sealing design provide unmatched durability against wear, temperature fluctuations, and road debris impacts for year round performances. Specifications: Component: Metal Parameters: Can be applied to hubs with hub hole 11.3 or 16 at the same time Dimensions: Outer diameter 18.7mm, bottom diameter 16.5mm Total length 42.5mm Package Includes: 4pcs Motorcycle Valves Stem note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.