ALUMINIUM FINS: This heat exchanger adopts aluminium fins, using the black oxidation paint to increase the thermal efficiency. HIGH EFFICIENCY: This water cooling efficiently pull heat away from cycling coolant thus achieving maximum heat dissipation at both low and high airflow operation. 18 PIPES: This PC aluminium has 18 pipes and adopts G1/4 threads, recommended fan installation size is 4.7x4.7x1.0in. EASY INSTALLATION: The CPU water cooling comes with 24 screws that ensure easy installation. MULTI PURPOSE: This heat exchanger is suitable for computer CPU, industrial variable frequency drives, VGA water cooling, head cooling, and air conditioning evaporator.