A honeycomb disc is a type of disc-shaped percolator that resembles a honeycomb with several tiny holes and is used in dab rigs or bongs. It differs from disc percolators as it sits inside a dab rig or bong, whereas disc percolators are welded to the inside of the body of the piece. The flat, horizontal disc resembles a honeycomb and creates a flurry of bubbles which allows an increased amount of vapor or smoke to be inhaled. It works like a percolator to create a smoother hit by filtering and cooling the smoke as it flows through the holes.