Two dome shaped percolators with 4 diffuser holes per bulb. 19mm Joint size. Double Bubble Bottom percolator bong. Ice Catcher notches. Frosted pink Color. This bong will cool off your smoke for smooth hits. A percolator acts to force smoke through long chambers which further filters the smoke and smoothens it. This 12 inch percolator has a double dome shaped diffuser. Dome shaped percolators are also known as bulb percolators. Each dome or bulb contains 4 diffuser holes, which further cool the smoke. This percolator comes in a gorgeous pink color. Pipe comes complete with ice catcher for a further superior smoke! Glass on glass downstem and bowl slide are included with this percolator. Downstem contains diffuser notches as well. The bottom Jar design allows for an increased water height and forcing the smoke to go through more water. Note that each item is hand made and shape and colors may vary slightly.