Features: 1.Easy Installation: The road bike fork valve extension adapter and mountain bike extension converter are designed for hassle-free installation on various bike models, allowing you to extend the valve effortlessly. 2.Versatile Height Adjustment: The adjustable height thimble design enables you to fine-tune the extension according to your specific needs. Whether you prefer a higher or lower position, this durable Aluminium Alloy Extender provides flexibility for a comfortable riding experience. 3.Enhanced Air Sealing: With its built-in rubber seal, this Bike Front Fork Valve Extender ensures a secure and airtight connection, effectively preventing any air leakage. You can ride with confidence, knowing that your tire pressure will remain consistent. 4.Suitable for Downhill Mountain Bicycles: Specifically designed for downhill mountain bikes, this extension converter is built to withstand rigorous terrains and demanding riding conditions. It enhances the performance and functionality of your bike, making it an ideal choice for adventurous cyclists. 5.Perfect Gift for Cycling Enthusiasts: Whether you're looking for a thoughtful present for a loved one or treating yourself, this Bike Extension Converter is a great gift option for cycling enthusiasts. Its practicality, durability, and compatibility make it a valuable addition to any cyclist's gear collection. Specifications: Material: Aluminium Alloy Valve Adapter Size: 47.3*11.3cm Thimble Length: 40.3-43mm Notice: 1.Actual color may be slightly different from the image due to light effect. 2.Please allow 1-3cm deviation due to manual measurement. Include: 1 * Road Bike Fork Valve Extension Adapter 1 * Thimble