Note: Stainless steel versions also exist but may be slower at chilling as stainless steel has a lower heat transfer coefficient (i.e. is less efficient) than copper. This difference will be most noticeable when there is a great difference between the two fluid temperatures (as is the case with how a counterflow wort chiller is used to chill boiling wort using cold tap water). This difference in materials performance is negligible however with our stainless steel HERMS coil.
Specifications
Inner tube: 12 feet of 5/8" convoluted (twisted) inner copper tube for maximum performance (the wort is continuously turbulated as it flows through)
Outer tube: 12 feet of 7/8" copper
Wort connections: 1/2" NPT female
Water connections: Male and female 3/4" water hose connections
Dimensions: 10-1/4" high, 11" wide (coils are approximately 6" in diameter)