SENHAI Mini Bike Pump, Dual Action 220psi Portable Bike Pump with Gauge,Capable with Schrader Valve and Presta Valve,Also Can Pump Ball DURABLE AIRCRAFT GRADE ALUMINUM ALLOY- Good material insure good quality, durable and also lightweight, this bike pump won't break and you will always be able to deal with a flat tire on your way. UNIVERSAL WITH SCHRADER VALVE AND PRESTA VALVE- No need of transverter,able to pump schrader valve and presta valve, package include ball needle,can also pump your ball. HIGH PRESSURE OF 220psi- 220psi,higher than many traditional bike pump,Enough to inflate any bike tire--even a kayak.Pump securely snaps into the mount for a snug fit. DUAL ACTION AND WITH GAUGE- This means you can inflate a tire with half the pumps and half the effort.Save time and energy for you. Built into the pump. No need to use an external gauge. SMALL SIZE AND LIGHTWEIGHT- The size of this pump is very samll, as diameter 26cm, length 22.8cm, extended to 37.5cm, weight only 173g,very convenient to take it with you.