*Schrader and Presta CO2 inflator kit. *Inflator is small enough to fit in fanny pack or fender pack. *Unique design that features an easy-grip control valve so air flow can be adjusted or shut off. *Comes with (2) 16-gram threaded CO2 cartridges. *Most motorcycle and MTB tires require between 1 to 1 1/2 16 gram cartridges. *Most ATV and UTV tires require between 3 to 5 16 gram cartridges. *Insulator for cartridges is included.