i72 Tubeless Valve Stems 40mm Presta Pair - Brass Made with Core Remover Tool, Round Rubber Base with O-Ring for Better Sealing

I love the stems they are just what you need to go tubeless on your bike.

Works great seals well onto the rim.

Exactly what I needed and as advertised

Exactly what I needed.

As expected.

A much better valve than Stan’s. The oring under the nut fixes another source of leaks and keeps the nut tight.

Great if youre trying to do the Gorilla tape method

Yes I will admit these things are a great deal. But with their low price they lack durability. I set them up with no problems but soon realized their weak points. If you do not fully tighten them to the rim they will leak a lot of air quickly. Overall if you are looking for a quick way to go tubeless these are a good options but if you are serious about cycling I would dish out an extra 10 dollars and go with a nicer pair

Its been a month and holding good!

Converted my Rockhopper rims to tubeless and these seated well and havent leaked at all so far. Easy to install, arrived on time, no complaints. Cant comment on durability yet but so far Im happy.