The CNC TLR Valves are masterfully engineered tubeless bicycle tire valves constructed from lightweight, durable CNCmachined aluminum, complete with a stylish design that complements the aesthetics of any bicycle\n The valve cap's machined grooves improve grip and feature an integrated valve core tool as well as a T25 tip that tightens the valve to a tubeless rim\n The valves are equipped with an Oring and grooved aluminum locknut for a leakfree seal. They're tubeless sealant friendly, designed for maximum airflow, and offer compatibility with all Prestastyle floor pumps and hand pumps