Introducing the specialized air tool mtb c02 mini pump this compact road air tool provides the speed of co2 inflation with the added backup of an efficient mini pump the unique head of the pump works with any threaded c02 cartridge and includes a threaded holder to keep your cartridge safe before use the opposing side of the head is a presta opening for hand pump inflation the whole pump is constructed from lightweight durable and sleek looking aluminium the volume of the body is a lot lar