Black Leaf Smoke Stack Glass Bong Water PipeThis 12 inch water pipe was made by Black Leaf with thick, high quality borosilicate glass. The smoke stack design includes four chambers, in a tight tube, which diffuses the smoke and produces a light whistle sound. The upper smoking chamber includes a dent where you can temporarily place small amounts or herb or oil. The design includes a flared base for balancing protection and the smoke stack body acts as an awesome hand grip. The pipe includes a