Feature:1. Highquality aluminum alloy CNC machining to make sure that all parts are durable and has a long service life.2. With reliable adjustment switch, easy to control, no leakage, this CO2 inflator is compatible for Presta/Schrader valves on bicycle tires.3. The easytouse dual valve is checked by the lock and unlock mode of the air control valve, and the screw head is tightened to control the amount of air inflated.4. You just need to connect the tip of the mouth to the bicycle tire, it can be inflated in a few seconds and quickly reinstalled.5. There is no CO2 cartridges included, this product is small and easy to carry to inflate tire during travel.Specification:Condition: 100% Brand NewItem Type: CO2 InflatorMaterial: Aluminum Alloy+SpongeInflator Length: Approx. 36mm/1.4inInflator Width: Approx. 31mm/1.2inInflator Outter Diameter: Approx. 16mm/0.6inSleeve Length: Approx. 60mm/2.4inSleeve Diameter: Approx. 28.5mm/1.1inWeight: Approx. 32.0g/1.1ozInstructions:1. Install the CO2 cartridges (not include) on the product and tighten it2. Tighten the air valve to the tire valve3. Rotate the CO2 cartridges (not include) counterclockwise about 60 degrees to inflate4. Loosen the valve from the tire when it is inflated.Package List:1 x CO2 Inflator1 x Sponge Sleeve1 x ManualNote:1. No CO2 cartridges included2. Please use up the CO2 cartridges (not include) at one time within 10 minutes.