Most compact and functional hand-held mini pump with 1” gauge. The patented ring-shaped air piston, with a 1” analog gauge, allows this pump to feature a center-located retractable hose, yet still holds the lowest profile in the industry. The all-in-one mini auto-switching pump head fits Presta, Schrader and Dunlop tire valves, providing sure-locked performance and high pressure. Featuring the two innovations described above, this mini pump is probably the most compact and functional hand-held air-inflation device in the industry.