Universal Presta Valve Valve: Our presta valve seed spare part, which is compatible with all presta valves, is designed to fit perfectly to all TUBEBEless mountain bike tires, road bike tires, gravel bike tires or cross -bicycle tires. . Corporate performance: Our Square1 Presta Valve Nucleus spare parts designed for TUBELEless tires is designed for optimum performance and sealing each time. .Yedek presta valve seed: If you have problems adding air to your tubeless bike tires, changing the presta valve core is usually a simple solution to solve this problem. . Total Package: In addition to the change of 10 presta valve seeds, we a comprehensive solution for your presta valve tire care needs by providing 1 useful presta valve seed extraction tool and 10 valve body cover. The Presa Valve Nucleus extraction tool makes it easier to remove the old presta valve seeds and install valve seeds. For possible maintenance, have several presta valve core and presta valve extraction tool in your bike bag. . : Square1 is a small business and we strive for customer satisfaction. If you experience any problems with the presta valve nucleus change, send us a message, try to solve the problem or your money.