You set out on the long-awaited Sunday ride with your MTB, racing, or trekking bike, only to realize that the tire pressure and the pressure of your portable mini pump are too low. Pumping up the tires at the nearby gas station with the standard pump for car tires? Good idea, if only your bike didn't have a Dunlop or Presta valve. This dilemma is solved by our flexible, intelligent everyday helper with a streamlined design: compatible with all common valves, the valve adapter screws onto the Dunlop or Presta valve and allows access to the powerful gas station pump thanks to its Schrader valve connection. The aluminum mini-tool, designed as a practical keychain, also features an integrated valve key for loosening and tightening AV and SV valve inserts.