Accessory type: Adapter. You set off on the long-awaited Sunday ride with your MTB, racing, or trekking bike, only to realize that the tire pressure and the pressure of the mini pump you brought are too low. Pumping the tires at the nearby gas station with the usual pump for car tires? Good idea, if only there wasn't a Dunlop or Presta valve on the bike. This dilemma is solved by a flexible, intelligent everyday helper in 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.