The diameter of the beer keg is smaller and spaced from {HEAD ~ the inner diameter} of {TAIL ~ the container} so that the space therebetween may be packed with ice cubes or crushed ice to keep the beer keg cold 
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The diameter of the beer keg is smaller and spaced from { HEAD ~ the inner diameter } of { TAIL ~ the container } so that the space therebetween may be packed with ice cubes or crushed ice to keep the beer keg cold
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH