Pure aluminum heat sink, 1 inch 17-20 fin Installed 2 fan Suitable for water-cooled computer CPU, industrial variable frequency drives, the laser head cooling, air conditioning evaporator and industrial control cabinet cooling Specifications: Material: Aluminum Color: Black Size: 240(L) x 120( W) x 30( H) mm Net weight: 520g Packing Included: 1 x 240mm Water Cooling Row Heat Exchanger Radiator Fan Mesh Cover for CPU PC