- Package Includes : Get 20 high-quality valve inserts and 1 valve core removal tool. Ample quantity to meet your cycling needs, perfect for sharing with family and friends. - Product Dimensions : Each valve core measures approximately 2.5 cm, while the valve core removal tool is about 1.7 x 1.1 cm. Compact and portable, these tools are easy to store and transport. - Durable Material : Constructed from high-quality materials, these valve cores are reliable, safe, and built to last. They effectively prevent air leaks from old valves, ensuring long-term performance. - Functionality : Designed for a precise fit with Presta valve stems, these tubeless cores streamline the process of tightening or loosening valve cores on any tyre. Ideal for various applications including tubeless road bikes and mountain bikes. - Use Scenarios : 1. Quickly replace a worn valve core on your road bike during a race for optimal performance. 2. Keep your mountain bike in top shape by easily changing valve cores before an adventurous ride. 3. Perfect for seasonal maintenance, allowing you to prepare multiple bicycles for a ride with friends. This product is not sponsored or endorsed by any specific brand, including Presta. Enjoy seamless compatibility and outstanding reliability with these essential bicycle tools.