Bike Pump - Genuine Innovations - Ultraflate Plus Instant CO2 A visual pop-out pressure indicator and a cartridge cup lock system are automatically activated when a charged CO2 cartridge is in the inflator Push on for Presta and screw on for Schrader valves, Safety lock prevents accidental discharge 1.85" x 1.26" x 5.06", 72.6grams High strength construction, glass-reinforced nylon, with brass valve internals *This item can ship by ground services to US addresses only.