Features:1. Small, lightweight, convenient to carry. 2. One button inflation, fast and easy operation. Rubber EVA foam sleeve (suitable for 16g screw steel cylinder), anti-oxidation, corrosion resistance, rust resistant 4. Rubber EVA foam sleeve(suitable for 16g screw steel cylinder), when inflated, the temperature of the bottle body, protective sleeve protects your hands. 5. Specifications: Condition: 100% Brand New Item Type: CO2 Inflatable Mouth Material: Aluminum Alloy Color: Red Size: Approx. 5.3*1.4*2cm/2.1*0.6*0.8inch Weight: Approx. 52g Application: Pump up Presta Valve Bicycle Package List: 1 x CO2 Inflatable Mouth1 x EVA Protective Case Note: Small inflatable nozzle does not include CO2 bottle.