The Swiss Tree Incycler Rig by Leisure Glass. This powerful fixed stem bong features a Reinforced 6 Pillar Swiss Tree Perc with internal recycling water chamber. The Swiss Tree Pillars feature 4 donut percolators per arm with a puck base filter. This 14mm water pipe functions perfectly as an oil rig or flower bong. Made from durable American glass, this heavy hitter guarantees smooth, filtered hits every time.