Features:Suitable for graphics gpu heat; motherboard northbridge southbridge, graphics; semiconductor cooling piece, low-end cpu can also be used in conjunction.The diameter of internal flow channel is 6mm round hole channel. Integration of parts soldering, the leakage rate of parts is less than 5 x 10-6mbar.l/s.The widest part of the copper water cooling block nozzle is 8.5mm, and a diameter of 7mm water pipe is fitted with. Products connector is the side exports, as shown. please observe own equipment before buying. To avoid conflict with the pipes.Made of high quality pure copper, surface polishing, improve the heat transfer efficiency.Specifications:Material: Pure CopperColor: CopperType: Volume Heat ExchangerHeat Transfer Mode: Recuperative Heat ExchangerWater Flow Channel: Double U ChannelSize: 40 * 40 * 10mm/1.57 * 1.57 * 0.39inchWater Nozzle Outer Diameter: 8.5mm/0.31inchFitting Hose: Inner Diameter of 7-8mm/0.28-0.31inchProcess: Vacuum BrazingSurface Treatment: PolishingPackage Weight: approx.125gPackage Included:1 x Copper Water Cooling Block