Another amazing and unique, hard to find, rare scientific tube offered by smokecountry.ca. This tube is about 17 inch tall, 7mm thick glass, blown in California, upgrid stemline percolator at the base and flower cap percolator on top of it and comes with 18mm herb bowl. This will bubble up all the way like nothing else. If you are looking for one of a kind, scientific tube, look no further. Pictures do not justify it s quality.