Used it today. Nice chilly ride with a few fellow forum members, Chicago downtown and lakefront. I had a rear tubular go flat.

Billy K. (I don't know his aka / handle here) tried his best with a vinti Zefal conventional + adapter. No go. He insisted to try again and still had issues. So I pulled the mini Zefal out of my pack and inflated it easy peasy. Its basic no frills but works good for the money. Can get decent high psi. Comes with a valve adapter that hides under a cap. .