In my opinion the best tubeless valves on the aftermarket. I ran a tubeless Konversation with my HED Jet 4 road wheelset and it worked great. I like the o-rings on both sides, especially on the outside as they protect the carbon fairing from the metal compression ring. The only thing to be careful of is not to over tighten the valve as the rubber valve is quite soft on the inside and can be pulled in and jammed in the rim.