Topeak Air Booster G+ CO2 Inflator - With Gauge Pump Up The Jam Proper tire inflation leads to fewer pinch flats and more efficient rolling. You should always carry a pump with you just in case you need to reinflate a tire. The Topeak Air Booster G+ CO2 Inflator is a CO2 inflator with an integrated tire pressure gauge, featuring a 360deg rotating gauge for easy viewing. It can be used independently as a tire pressure gauge or with CO2 inflators. It is made from CNC-machined aluminum, reads up to 160 PSI, works with Presta valves, and has CO2 cartridge storage. Features Works as a tire gauge or as a CO2 inflator360deg rotating display so you can always see what pressure your tires are at Made from CNC-machined aluminum Weight: 55g | Topeak | Airbooster G+ Co2 Inflator - With Gauge Co2 Inflator - With Gauge