Single dome shaped percolator with 3 holes. 14mm Joint size. Round bottom percolator bong. Ice Catcher notches. Deep Crackle Percolator . 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 8 inch percolator has a single dome shaped diffuser. This percolator comes in a gorgeous deep black color. Pipe comes complete with ice catcher for a further superior smoke! Glass on glass slider included.