MSW Jetstream Kit with Jetstream Adjustable Inflation HeadLightweight and easy to use, MSWs Jetstream adjustable inflator head works with all 3 8 threaded inflation canisters and allows you to vary the CO2 flow to avoid overfilling your tires. Adjustable airflow with convenient shut off feature Easily pushes onto Presta or threads onto Schrader valve tubes Knurled knob for reliable grip even with mittens or gloves Kit comes with inflator head, 38g cartridge, and foam sleeve Included Cartridge: Yes Cartridge