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Ellen E
Reviewed in the United States on July 24, 2024
These worked well for a little while. Then I got a flat and realized the little edge where these are split cut a tiny hole right at the base of the valve. So disappointing…Maybe going to try the metal ones with no slit.
Cal Reviewer
Reviewed in the United States on May 19, 2024
I had to run a drill through the inside to widen it enough to get it to work.Pain-in-the-ass.
Bufbarnaby
Reviewed in the United States on February 2, 2024
And are the cheapest. The aluminum, threaded ones I returned because they do not go as far into rim, and take up a lot of threads.These on the other hand sit very flush, and go twice as far into hole. Tip...install before you push stem through the other side. These leave more threads for the pump head to grab onto.
Customer
Reviewed in the United States on November 8, 2024
Easy to install. New bike came with Schrader rims, and all my other bikes have Presta valves. These shims allow me to use presta tubes in Schrader rims, and they work flawlessly...no slippage and no cutting the valve stems at the tube. Highly recommend.
Dwayne L Taylor
Reviewed in the United States on November 29, 2023
I’m always on the hunt for these little adapters this pack was just want I need for my project and a few extra for the tool box. Fit and work great. Mushy get some mor to have extra extras.
Jimbo
Reviewed in the United States on July 22, 2022
After getting a couple of flats right at the valve stem, I consulted the internet and heard lots of ideas about holding the pump with my third hand to stop it from moving the valve stem around and wearing the tube (right where a patch would never work). I spotted these and ordered them. My rims are Mavic CXP-21 700C with Presta tubes. This rim will allow the tube to contact the hole in the inner rim around the valve stem which will easily cause a flat if the valve stem is moved. I put these into that inner hole, a sung fit and pushed the valve stem into position through them, another snug fit. The valve stem is now not moveable other than radially, so no more flats.
SATX Biker
Reviewed in the United States on June 18, 2022
These are not rubber. They are hard plastic so when you go to run the palve through, the valve pushes the adapter out. If they were rubber they might work but these are hard plastic. FALSE advertising on the part of the seller. Returning.
Khoi D. Pham
Reviewed in the United States on October 7, 2022
Fits inside the Schrader hole and converts it to presta. Had installed for gravel tires on road bike since purchased. No issues on the trails yet.
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