PURR 18mm Heady 9-Hole Bowl (Color Varients)Style out your heavy hitting pieces with pure American made color & craftsmanship. Clean less with its 9 expertly drilled holes that keep greens out of the bong and in your bowl. Ash stays out of your water so it stays cleaner longer. Dual wall design helps manage heat when you're going hard on your glass. Less worry when you're grabbing for your bowl to clear your hit! Total control for any 18mm bong setup. The improved airflow makes a great upgrade