The Buddyz Glass Scrubber Cleaning Tool is super strong and works on any thickness glass up to 1" thick! Similar to magnetic aquarium glass scrubbers. Gently drop one end of the Buddy cleaning tool into your bong / water pipe, then use the other side of the tool on the outside of the glass to connect the magnet. Move around all of the glass walls to gently scrub from the inside out. Great for hard to reach places. The Original Buddyz MagCleaner is guaranteed to clean your glassware with just a splash of water.