Ensure the proper functioning of your glycol chiller system with this 2 product trunk line system with two 3/8" Glycol lines. These durable, flexible trunk lines connect your chiller to your glycol ready tower. Each trunk line is equipped with an internal moisture barrier to prevent condensation, and a foil wrap that sits over this barrier to efficiently utilize the cooling power of the glycol lines. Each of the quarter-inch inside diameter product lines lies in direct contact with a glycol line for maximum reliability and effectiveness. With a properly installed and maintained glycol system, you can be confident that you're dispensing high-quality, properly-chilled beer every time!