A new & unique alternative to cooling plates. This tube-within-a-tube snake is used to recirculate glycol or cooled water through your ferment to keep temperatures down. It can be used in a tank, macrobin, or barrel. The inner vinyl tube runs through the middle of the corrugated stainless tubing, but is shorter than the stainless tubing. Glycol can run through one tube and back through the other, completing the loop.