Keeping your fermentation temps. under control is very important for optimal flavor control and quality of the finished beer. With the Anvil Carboy Cooling System, you wont be disappointed! This simple system includes virtually everything you need to keep your beer temps. closely regulated at an amazing price. Needed, but not included, is a cooler filled with water and ice, or a glycol chiller, and if desired an insulation jacket for your carboy. Get the best quality beer possible by keeping fermentation temps. under control with the Anvil Cooling System!