Ultra-thin Series Press-Lock II tightly packs 0.25 in. dia tubes into cold plate which is only 0.3 in. thick. This provides high fluid velocities and thermal mixing, and takes up little space. Copper tubes handle water and most cooling fluids. Stainless steel tubes are available for custom configurations using deionized water or corrosive fluids. Plate can be drilled, tapped, or further surface machined. Unit comes 6 and 12 in. long in straight and beaded fittings.