This bad boy makes the best tornadoes you have seen. Water chamber is in the saucer shaped base. The turbine or tornado percolator dips into the saucer chamber from above. Upon inhalation, this causes all the water to twist up into the 2nd chamber above the turbine. This makes a really cool effect. The water pipe is tilted, allowing you to see a small part of the water twisting action. Thickness of 3mm. Joint size of 15mm. Diameter of base is 3 inches. Diameter of middle water chamber is about 2 inches. Nice heavy duty turbine for a great deal. Get it before it's gone, as the artist is slow at remaking it.