When riding tubeless tyres, it is necessary to use a tubeless valve. Due to rim depth, some may be too short and you would not be able to access the push pin to inflate the tyre.
You will need a tubeless valve extender in this situation.
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Machinned down from aluminium, the tubeless valve extender takes place in between the push pin of the tubeless valve, and the threaded stem.
It is triple threaded. One thread is used to lock the extension on the stem, the second one receives the push pin, while the third one is used to tight the nut for a perfect sealing.