...it's the long type with the screw thread you can push to make the air hiss out. I forget what that type is called now. Anyway they are a pain to get the pump on without losing to much air...I much preffer the valves on my mtb...the old type where you screw on a tube to the pump and the tyre and it's easy. Also my valves move around a lot when I pump them and I'm worried theyill come off....what is the point in these finicky valves??