The mini air pump is specially designed for cycling and mountain biking. It is portable, lightweight and versatile. Nice accessory for outdoor use for cyclists. Features: Lightweight and compact size, convenient to carry. Aluminum alloy material, durable, corrosion resistant with good hand feeling. Quick and easy inflation, saving time and labor. Joystick operation regulates CO2 release rate for precisely controlled inflation Compatible with Schrader and Presta valve nozzles, with no valve head changes required. Foam sleeve protects fingers from frostbite during use. Waterproof and rust prevention, more durable. Note: No CO2 cartridge included. Features: Material: aluminum alloy. Color: blue / red (optional). Maximum pressure: 110 PSI Hose size: 4.6 * 3.1 cm / 1.8 * 1.2 in Product weight: 25.3 g / 0.9 oz Package size: 11 * 7.5 * 2 cm / 4.3 * 3.0 * 0.8 in Package weight: 41 g / 1.4 oz Package List: 1 * Bicycle Pump 1 * Foam Sleeve