Amazon.com: Slim Keg Adapter - Used on Top of a Half-Barrel Keg Stacker or a Half-Barrel Keg Spacer to Stack a Sixtel Keg or a Quarter-Slim Keg on Top of a Half-Barrel
Taylor Stainless Steel Digital Keg Scale - 440 lb. Capacity
Regency 10" x 3 1/4" Keg Series Keg Stacker for 1/6 or Cornelius Kegs