Enhance the functionality of your tube with this high-quality Valve Collar designed specifically for tubes with an outer diameter of 20mm. Made from durable materials, this collar ensures a secure fit for your valve, preventing any leaks or air loss. Easy to install and compatible with various tube brands, this Valve Collar is a must-have accessory for maintaining optimal performance and longevity of your tube. Upgrade your equipment today with this reliable and practical Valve Collar.