Add an additional water chamber to your water pipe with an Ash Catcher by Herb-Iron. Ash catchers pre-cool your smoke and help keep your water pipe clean. The Herb Iron glass ash catcher includes two dents on opposing sides of the push bowl specifically made for the Herb-Iron ceramic heating apparatus. These dents allow users to more efficiently press the Herb-Iron's tip into the bowl to vaporize your flowers. This particular ash catcher includes a 45º grindless 18mm male joint.