Topeak AirBooster G+ CO2 Inflator - with GaugeTopeak AirBooster G+ CO2 Inflator with Gauge. A CO2 inflator with an integrated tire pressure gauge featuring a 360 rotating gauge for easy viewing. It can be used independently as a tire pressure gauge or with CO2 inflators. Presta only CNC aluminum Reads 160 psi 11 bar 1 1 2 analog 7. 8 x 4 x 3. 8 cm TECH SPECS Cartridge Type ThreadedCartridge Size 1625Gas CO2Included Cartridge NoDefined Color Black