Pro Bike Tool is a compact and efficient bicycle pump, perfect for inflating road, mountain, and other bicycle tires quickly. Its rapid inflation capability comes from its use of a CO2 canister. Simply screw the canister to the valve, activate it, attach it to the tire, and inject the CO2. For safety, the device includes a protective cover to prevent frost damage to your hands during use. A built-in lever allows precise control over the CO2 injection speed. After use, the canister can easily be disconnected or replaced with a new one.