Easily and mess-free install and maintain tubeless tires - without clogged valves. Do you want to work with tubeless and sealant worry-free? The revolutionary milKit tubeless valve system makes maintaining tubeless tires quick, easy, and clean: measure and refill old sealant without releasing air from the tire; closed rubber flaps at the bottom of the valve prevent clogging from sealant. Simplified installation: the milKit valves keep air in the tire even without a screwed-in valve core, making inflation and adding sealant easier - without the mess. This product, made in Germany, impresses with high-quality, lightweight aluminum valves and an elegant design with many smart details. The valves fit all common rims, including road, gravel, and MTB tubeless.