WTB TCS Presta Valve Stem 34mm Brass 2 Pack
WTB's TCS is their Tubeless Compatible System. These presta valves are one of the things you'll need if you're converting tubeless compatible rims to tubeless.
This valve does exactly what its supposed to do. The core is removable and really should be noted in the description. I installed on a non tubeless compatible rim with Gorilla tape. Drilled out a 5/16 hole in the inner rim wall which was perfect for the rubber stopper on this valve. Honestly cant imagine why anyone would pay for a more expensive valve.