The inner tube is made from 12' of 5/8" stainless steel which continually turbulates the wort as it flows through. The outer tube is made from 7/8" Stainless Steel. The Convolutus chiller allows you to pump wort through without having to restrict your pump to slow down flow. The wort in and out feeds are 1/2 Male NPT threads. The water connections are male garden hose connections.
10 1/4" height by 11" overall diameter (coils themselves are about 6" in diameter)