G1/4 GPU Water Cooler Block Universal for GPU Computer Water Cooling System Waterblock AMD Intel 775 1156 LGA 2011Features:This is a universal Water Cooling Block for GPU.Red copper at the bottom, top cover is transparent Acrylic, and the buckle holder is made of stainless steel.Copper base is precisely cut, the gap between each cut copper is about 0.5mm laterally and vertically. 25 water channels.High performance copper base, processed with anti-oxidization technology.Perfectly fit the GPU, carry away more heat from GPU quickly.Can be used on AMD 940, AM2, AM3,AM4,Bulldozer, Intel 775, 1155, 1156, 1366,Intel LGA 1150 and LGA2011 platformSpecifications:Material: Red Copper + Acrylic + Stainless SteelBase Size: Approx. 40 * 40 * 3 mm / 15.7 * 15.7 * 1.2 inchThread Spec: G1/4Outer Diameter: 12.9mmCompatible GPU: Fan Hole Size is 43*43mm, 48*48mm, or 53*53mm.Package Included:1 x GPU Water Cooling Block1 Pack x Screws