Draft Brewer Cannonball Stainless Steel 1.75 Gallon Mini Keg Ball Lock Homebrew Kegging System with Dual Gauge CO2 Regulator The first mini keg system that packs the power of a taproom into a portable, compact 1.75 gallon barrel Barely bigger than a milk jug, it slides straight onto a fridge shelf, pops in a cooler or drops right into your trunk Cannonball kegs are easily stackable once disconnects have been attached. Includes a new 1.75 Gallon mini keg, CO2PO Dual-Gauge CO2 Regulator, tubing, washers, and Instructions Contains everything you need except a CO2 tank to get your party started!