EVERCOOL HDAC Aluminum HDD Cooling Heatsink Bearing Type: 2 Ball RPM: 2000~3700 RPM Air Flow: 53.2~100 CFM Noise Level: Dimensions: Fan Dimensions 149 x 42 x 48mm Heatsink Dimensions 193 x 149 x 42mm Features: Base Material : Aluminum Demountable filter easy to clear. Fits standard 5.25 Drive Bay. Blue color LCD Panel, LED light out automatic. It reduce the HDD temperature and noise & vibration efficiently during the HDD in high speed operating Supports for kind of 3.5 H.D.D. Building unique turbine cross-flow fan design , the high air flow volume to provide highest dissipation performance . Turbine cross-flow fan with 2 ball bearing design can extend working life. Package Contents: HDD Cooling Heatsink Bolts