Zipp Disc Valve Adaptor Black Review

Don't waste your money! Doesn't stay on the pilot valve and never holds high pressure unless someone is holding it while you pump. I return mine.

Nicely made, well made and works great on open wheels but doesn't fit my Zipp rim. Of course my bike is a few years old but... it's good equipment but for the price you can do better.

I have one of these and can't get the adapter to stay on the presta valve without holding it power. Makes it impossible to inflate the tire by holding the adapter on the valve. unusable.

I see many comments about this adapter requiring a hand hold on the valve making it impossible to use. the Presta valve) rotates and this tightens the adapter onto the valve, allowing you to use it hands-free.