This scientific glass incycler has a unique design that contains supreme functionality. This recycler rig is an incycler because the main chamber also holds the recycling chamber. Inside the main chamber is also a circ perc that provides amazing diffusion through its numerous slits. Vapor travels from the 90˚ 14mm female joint to the main chamber where it passes through the circ percolator. Afterwards, smoke and water travel through the separation tube to the cylinder-shaped recycling chamber, which has 3 small holes to add extra filtration. The water and the vapor move in a loop, circling between the two chambers and passing through the circ perc multiple times before leaving through the mouthpiece. Once the recycler has completed its function, the smoke or vapor is smooth and never harsh on your lungs or throat!