Features: 1.All Red Copper: The fins, water chamber and guard plate are all made from red copper material, which ensures fast heat dissipation. 2.Easy Installation: This water cooling radiator adopts G1/4 thread interface that provides great convenience for installation. 3.Quick Waterflow: The inner diameter of copper pipe is approximately 7mm/0.28in, which accelerates the speed waterflow and impurities. 4.Highly Durable: With the red copper material, this water cooling radiator is sturdy and highly durable. 5.4.72in Fan: This computer water cooling radiator is suitable for fan of 12cm/4.72in. specification:Item Type: Water Cooling Radiator Material: Red Copper Hole; G1/4 x 2 Product Size: Approx. 155 x 122 x 29mm / 6.10 x 4.80 x 1.14in Pressure Test: 1 bar Applicable Fan: Approx. 12 x 12 x 2.5cm / 0.47 x 0.47 x 0.10in Pipe s: Approx. 7 x 0.28mm / 0.28 x 0.01in, 6Pcs (inner Diameter of Copper Pipe is More Than 6mm, to Increase the Speed of Waterflow and Liquid Impurities Fin Thickness: Approx. 0.11mm / 0.004in PackageList:1 x Water Cooling Radiator 1 x Screw Kit