This cleaning brush is great for homebrewers and those who ferment liquids in carboys. Use it to clean the inside of PET carboys and plastic fermenters. It's long enough to reach deep inside large carboys and the L - shaped bend helps you get rid of leftover residue easily. The brush has food - grade nylon bristles. It's 21.5' from the end of the handle to the 90° bend, the brush section with bristles is 8.5' long, and the bristles are 2.75' in diameter. It can withstand temperatures up to 140°F (60°C).