The nylon bristle of carboy cleaning brush will not scratch your carboys during cleaning process. These carboy brushes for cleaning with a convenient 90 bend to reach every hard-to-reach spot in your carboy, suitable for your 3 gallon, 5 gallon, 6 gallon, 6.5 gallon carboys to clean the neck area, inside of the bottom, sides and contour of carboys.
eBay