This Krome Dispense Keg Carbonation Lid kit comes with a corney keg style lid with a gas in ball lock connection which is attached to a piece of food grade hose that has a stainless steel 0.5 micron diffusion stone on the end of it. The stone will hang down in the bottom of your keg. Using this kit will greatly reduce the time it takes to carbonate a keg of beverage since the stone is releasing tiny CO2 bubbles directly into the beverage rather than into the head space.