Features:100% brand new and high qualityInternal extrusion flow forming channel.Brazing parts into a whole.Made of high quality material, durable, firm and stable so that we can use it.Applicable to Cellphone computer CPU water, industrial driver inverter, cooling, industrial cooling control cabinet.Surface treatment: silver oxidation.Processing: vacuum aluminum brazing. Package Includes:1 x water cooling block Specifications:Item Type: Water Cooling BlockMaterial: Aluminum Size: 20mm/0.79in 30mm/1.18in 40mm/1.57inColor:Silver Quantity: 1 PC note:Only the water cooling block, other accessories demo in the picture are not included!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!