Review on 🚴 BWSHLF Tubeless Presta Valve Stem Kit - 40mm / 44mm, Super Lightweight Alloy, Includes Value Core Remover Tool and Valve Stem Caps - Multiple Color and Size Choices (Pair) by Nate Jenkins

great price and durability. they seal well. The only downside is the width of the valve section, which is inside the tire. You may need to fiddle with the tire the first time you mount it as it is a wide valve base and you need to bead it properly. . Although I've worked with bikes (and cars) for decades this was my first tubeless wheel that installed with no problems and they helped and seal tight - the seals do the trick - and they look good and come with 2 sets. hats. Theirs are also cheaper than many others.