Devault Red Keg Stacker-Ring for 1/2 Barrel KegsMaximize your cold room storage with the Devault 1 2 Barrel Keg Stacker Ring. This heavy duty red plastic ring allows you to safely stack full 1 2 barrel (15. 5 gal) kegs on top of each other, doubling your floor space efficiency. Constructed from high impact, high density polyethylene, it features a specialized non slip design that grips the keg rims securely. The high visibility red color allows for quick organization and identification of inventory