Mushroom Bong - Inline to Mushroom Perc Water PipeMushroom Bong This 14" clear glass mushroom bong really stands out with its unique fumed glass mushroom perc. This glass pipe features a dual perc design with a slitted inline perc followed by the fumed glass mushroom perc that contains colored circles and a tip. The two percs work together to filter and diffuse your smoke for extremely smooth hits. It has an 18mm female joint, a thick rounded base, a flared mouthpiece, a straight neck, and a