Freeze Pipe RecyclerThe Freeze Pipe Recycler features a base with recycling function as the name suggests. Water is circulated between the upper and lower water chambers in order to maximize percolation and filtration while minimizing the necessary interior surface area. This makes it an ideal piece for concentrates and herbs alike. Better percolation, air flow, and taste than bongs or bubblers Provides constant circular filtration until the smoke is cleared 14mm bowl