Our original uKeg 64 is a mini keg in the size of a half-gallon growler, keeps beer cold, fresh and carbonated for two weeks. On the go or at home. Durable, double-wall vacuum insulated stainless steel. CO2 regulator cap with customizable tap handle and gauge. Available in Stainless or Copper finish. cartridges - NOT INCLUDED (except where noted) Capacity: 64 oz (1893 ml) = 4-5 beers Dimensions: 5.2in x 8.1in x 10.9in