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

These are 100% good. Should be.

Product is great, as expected

Includes a nice embedded o-ring in each nut so they never come loose. Helps with seal and prevent scratches, as well. A spare o-ring is included just in case and the valve core tool is a must have. Great size that fits almost any rim. This will be my go-to from now on!

Just got these and threw them on with my new plus size maxxis minions on i35 rims and they fit great, feel super durable, and seal perfectly. 10/10

These valve stems do not work with the Shimano rims so they were useless to me.

Outstanding product at a fraction of the “price”..!

Works great, great price

I installed these on 4 fat bike wheels. They are holding air just fine after adding sealant. Buying more for my gravel bikes. So far so good. If I have any issues I will for sure reply to my review.

Was as described and shipped fast

I should have read all the reviews. Like several other reviewers, after setting up my new tires and wheels, and installing sealant, these valves leak at the drilled rim hole. They dont seal properly. Big mess to re-install my tubeless tires with old Stans valves which fixed the problem. Mistake to buy these to save a few bucks. Stick with name brand components. Not at all sure about all the positive reviews on Amazon. Read and believe the negative reviews!