The lifeline co2 inflator head with control valve delivers quick and easy tyre inflation to get you back on the roads and trails as quickly as possible after a puncture simply thread a cartridge into the cartridge mount press the head onto the valve and turn the control valve to begin inflating close the valve at any time during inflation to retain pressure for later inflations ideal for topping up tyres with slow punctures until the next stop with a precision cnc alloy construction the li