Reference Title: GPU Water Cooling Block Double Channel Copper Cooler for Video Card Graphics Card Water Cooler Radiator For AMD for NVIDIA W40 PC Description: Features: . 2 holes on the side of the cover, the water flows from the side. 0.4 mm copper columns on the copper base. The water contact area becomes large, so the block can carry more heat from GPU quickly. The surface flatness is less than 0.01 mm. The base can fit the GPU better, so that it can absorb more heat. The copper base is processed with anti-oxidization technology. Compatible for GPU with fan hole distance of 53 mm- 61 mm. For Nvidia card- 6800GT, 6600GT, 7800GT, 7800GTX, 7900GT, 7950GT, 7900GTO, 7900GTX, 8600GTS, 9600GT,etc. For AMD card- X1900PRO, X1900XT, HD7950, HD7970, etc. Specifications: Item Type: Double Channel Copper Cooler Material: Metal Color: As shows in the picture Size: 862cm/3.122.340.78in (Approx) Quantity: 1 Set (other accessories demo in the picture is not included) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: (No retail package) 1 X Water Cooling Block 2 X Compression Fittings 4 X Mounting Screws