2pcs CPU Water cooling:1pcs 40*120*12mm & 1pcs 40*40*12mm,Material:aluminum & Aluminum alloy faucet diameter 9mmInternal fin thickness(approx.): 0.5MMThe internal flow path is double U-shaped waterway.Internal flow channel extrusion formingLeak rate of less than 5X10-6 mbar.l/s partsBrazing parts into a wholeProcessing: vacuum aluminum brazingSurface treatment: silver oxidationApplicable to computer CPU water, industrial inverter driver, head cooling, industrial control cabinet cooling.Color:SilverMaterial:aluminum & Aluminum alloySize: 40*120*12mm & 40*40*12mmPackage Contents:2 * CPU Water coolingOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.