Zipp Valve Extender - 33mm for 303 1 Piece for Threaded Presta Valve Black

Zipp valve extenders for use with threaded non-removable presta value tubes.For use with threaded presta (non-removable core) tubesExtenders thread "over" an existing valve and do not "replace" a valve coreKnurled end to keep pump from slipping3mm hex broach in the barrel to guarantee a perfect seal when tightenedSold each