Always use the right tool for the right job! The Demijohn & Keg brush has a large stem and brush head that can reach down into demijohns and kegs alike. It is the right tool for thorough keg cleaning, as the bristled head can be spun and used to brush clean even tough debris and buildup. With a treatment of a cleaner such as PBW followed by a thorough scrubbing with a keg brush, even old, nasty kegs can be made to shine and be used once again. Highly suggested to any brewer who kegs!