A cooling system that is only limited by your imagination. It's unique design of cooling fins within the inner and outer surfaces provide maximum cooling efficiency by pulling the heat out of any liquid that passes through it, dissipating heat into the ambient air surround the coolers. For every inch of tube you have 6.713 in2 of heat radiation, and an interior heat soaking surface area of over 5 in2 per inch of tube. The two tube assembly has over 13.426 square inches of heat dissipation per inch of length on the exterior, or over 154.4 in2 of surface area to dissipate heat on the 12 inch cooler. With a heat soaking surface area of the interior of over 110 in2 to pull the heat out of any liquid passing through it. The 2 tube kit includes: (1) 38128