I ordered the brush, because I have no other means found easier to clean my bong. I'm very satisfied with the brush. Small nachtel, the brush came at me together bent at, so I had to bend them apart only with increased force, however, is still a bow in the middle of the steel / iron (or whatever material that is always). The bow makes it difficult to clean up, leaving scratches inside my glass bong.
To Reinung: At first I fill hot water into the bong and give a little to Pril, then the brush is used, at the first "insert" into the bong to solve the first dirt particles, further after a few out - and forth or up , - and down movement is completely cleaned the Bong. Only rinse and it looks like Brand New!