Features: brand new and high quality Name: special version water-cooled CPU computer. Thread: g 1 / 4 (2 minutes) Actual Outside Diameter: 12.9mm. Compatibility: For 775,1150,1155,1156,1366. The appearance of refined water cooling design, environmental for protection copper nickel plating treatment. Features: Edition version of 1024 pieces of copper pillars for the platform of 32 Mini channels of 0.5mm of full channel cut. Specifications: Color: black,black transparent, silver transparent Size:approx. 9x9cm/3.54x3.54in The upper cover material is: transparent (acrylic) Bracket: 2.0mm Material: stainless steel matte Bottom: 3mm copper Copper pillar version : 1024 xcopper pillars The water channel version: 32 micro water channels,0.5mm cutting Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1PC x CPU Water Block 1Pack x Screw