TOPEAK

Allows a standard floor pump to deliver massive amounts of air volume by temporarily removing the presta valve coreCan also be used as a regular volume pump without having to remove the valve coreBecause the pump head removes the core internally, no pressure is lost or sealant spilledIntegrated pressure release button for releasing the pump head from the valve stemClear body allows you to see the valve core being removed and reinstalledMakes seating tubeless and other stubborn beads more...

 Two in one pump head Easy to install SmartHead & hose No more switching between Presta & Schrader

 Converts from Schrader to Presta valve at the flip of a lever