I've used several mini pumps on the side of the road,and now only carry the Topeak Morphs. The t-handle design makes pumping easier,and the chuck on the end of a hose means you don't have to hole the chuck on the valve.
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C'dale BBU('05 and '09)/Super Six/Hooligan8and 3,Kona Dew Deluxe,Novara Buzz/Safari,Surly Big Dummy,Marin Pt Reyes,Giant Defy 1,Schwinn DBX SuperSport,Brompton S6L/S2E-X/M6L-X/S12 T Line