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So these little black plastic things come with tubeless valve stems. The center hole is to unscrew the presta valve core out from the tube/stem. What the hell is the open-ended wrench part for? I thought it was to clip on to the valve so it would always be right there on the wheel when you need it, but trying to clip it onto the valve, it doesnt stay secure and im pretty sure thats not what the open ended part is for.
Any ideas?
