Add an extra punch and keep your bong clean with this glass 8-arm tree perc ash catcher. This ash catcher sits at a 90º angle and fits an 18mm water pipe and bowl. The extra level of filtration means a cooler and smoother hit plus it helps keep your water pipe clean. This ash catcher will make a great addition to any piece. Enjoy smooth smoke and a cleaner water pipe by using a percolated ash catcher.