Single dome shaped percolator with 3 holes. 19mm Joint size. Ice Catcher notches. 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 clear/nude. Pipe comes complete with ice catcher for a further superior smoke! 19mm diffuser down stem and a 14mm male dry herb bowl intcluded.