2 pcs Water Cooling Block:1 pcs 80 x 40 x 12 mm & 1 pcs 40 x 40 x 12mm Surface treatment silver oxidation Processing vacuum aluminum brazing.Leak rate of less than 5X10-6 mbar.l/s.The internal flow path is double U-shaped waterway. Internal flow channel extrusion forming,brazing parts into a whole Applicable to computer CPU water, industrial inverter driver, head cooling, industrial control cabinet cooling. Processing: Vacuum Aluminum Brazing Surface Process: Polishing Colour:Silver Material:Aluminum Size: Approx. 80 x 40 x 12 mm & 40 x 40 x 12mm Package Contents: 2 x Water Cooling Block Only 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. 2 pcs Water Cooling Block:1 pcs 80 x 40 x 12 mm & 1 pcs 40 x 40 x 12mm Surface treatment silver oxidation Processing vacuum aluminum brazing.Leak rate of less than 5X10-6 mbar.l/s.The internal flow path is double U-shaped waterway. Internal flow channel extrusion forming,brazing parts into a whole Applicable to computer CPU water, industrial inverter driver, head cooling, industrial control cabinet cooling.