Non-diffusing Dry Catchers by Alex K Glass help keep your bong clean after each toke. Dry Catchers do not have functional perc and use minimal water to trap all smoke debris and ashes in the foot of the ash catcher. The Alex K Dry Catchers are handblown from quality boro glass in Arizona. All Dry Catchers come with a matching female recessed joint for a bong slide. Dry Catchers work with any bong or water pipe with a female joint.