The all new ZT-726 is a hand pump and CO2 inflator combined dual function pump and applying disconnect – type design on CO2 inflator and barrel.
When ZT-726 Dual Function pump is used by the hand pump mode, it become a looking small but powerful pump, the capacity up to 100 psi / 7 bar and small size makes it easy-to-carry for bike rider. 
The ZT-726 Dual Function pump also can be a CO2 inflator, just disconnect the barrel of pump, super easy, simple and non-press button design, accepts all treaded CO2 cartridge and screw the cartridge into the end of the CO2 inflator, just twist the cartridge by forward or backward to turn on or turn off CO2 and control the flow of CO2,
very easy and quickly to inflate the tire in a second.