Hutchinson Air Chuck CO2 Inflator The Air Chuck SL is an easy to use CO2 inflator The easy to use chuck inflates tires by simply pushing the valve onto the valve of the tire. Inflates road tires up to 16psi and MTB tires up to 36psi Kit includes inflator and 2 16gram CO2 cartridges. Additional cartridges are available individually Works with Presta type valves only.