This waterproof self adhesive cold activated sticker changes color when you fill your keg, assuming your beer is cold. Each one is 9" long, by ½" wide. One sticker fits a 2½ gallon keg - use two stickers to fully cover a 5 gallon keg. These are yellow when warm, but turn green when cold. Keep in mind that in a cold refrigerator they will stay green and not show the level of the beer, but if you bring the keg out and let it warm up a bit they will show the level.
These are perfect also for determining when your beer is cold enough to serve - just watch for the color to change from yellow to green.
Pack of 4 for two five gallon kegs, or four 2.5 to 3 gallon kegs.
Be sure to clean the keg with something like alcohol or carb cleaner before applying for best results.
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