Zipp Valve Extension 48mm Presta

Zipp Speed Weaponry valve extenders for use with threaded, non-removable presta value tubes. For use with threaded presta (non-removable core) tubes Extenders thread "over" an existing valve and do not "replace" a valve core Knurled end to keep pump from slipping 3mm hex broach in the barrel to guarantee a perfect seal when tightened Sold each Specifications Valve Length: Med 41-55mm Length: 48 mm