New advanced 18mm male to 14mm female downstem glass, it features the 5-arm tree percolator,  there are different sizes to choose from 2 inch to 6 inch. 2 inch, 2.5inch, 3 inch, 3.5 inch, 4 inch, 4.5 inch, 5 inch, 5.5 inch, 6 inch. 

It works with any 18mm female joint bong glass.