Note: 1. The CO2 cartridges are just for demonstration. No CO2 cartridge included. 2. Mount the two Schrader (AV) and Presta (FV) valves 3. Aluminum Alloy Material MINI C02 BICYCLE TIRE INFLATOR Practical Schrader Presta Valve Bicycle Pump Combination CO2 PUMP NameCo2 bicycle pump MaterialAluminum alloy The color is red Net weight: about 61g ValveSchrader/Presta Features: portable, lightweight. 1. CO2 tank is not included 2. Please use the CO2 gas within 24 hours once you puncture the cartridge. Co2 bicycle inflator pump Insulated sleeve Aluminum alloy CNC machined Fit the presta and schrader valve CO2 inflator detail 1: dual valve head 2. Presta and Schrader 3: Control lever 4: Cartridge storage cartridge Quick and easy Inflate a tire by seconds with our 1 turn valve system. Get back to driving quickly with super fast and reliable tire inflation. 1. With the handle in the closed position, screw the CO2 cartridge clockwise into the inflation head. 2.2. aluminum alloy protection to prevent the gas from rapidly cooling and freezing and from rapidly cooling and freezing. 3. Penetrate the 2-in-1 head deep into the Presta or Schrader tires and twist and tighten the valve. 4. The switch with the red button can adjust the gas size and fill the required pressure.