This scientific glass ashcatcher is a simple accessory that can reap noticeable benefits to the smoker. As its name suggests, the primary role of this smoking accessory is to prevent ash from entering your water pipe. The second is to begin the distilling process early, by filtering your smoke through both chambers before it even enters the glass pipe. Each chamber has a unique percolator, the first has a slitted showerhead perc and the second has a 7 arm tree perc with 3 slits on each arm for increased airflow. Both of these percs act as a means to cooling and filtering the smoke while the dual chamber design will catch any ash from your tobacco that passes through the bowl. This ashcatcher fits standard 18mm female joints and contains its own female joint for use with 18mm male bowls.