Taking bulky CO2/dispense systems on the go is a huge hassle. This kit allows you to maintain constant dispense pressure without the hassle. Included chrome faucet will impress friends and family. Requires 3/8" or 5/8" THREADED CO2 cartridges. Not included. Search B01N0F03A5 (3/8") or B01MYNRXAF (5/8") on Amazon for ours.