Thermaltake Pure A14 Radiator Fan (Single Fan Pack)-Blue - 5.51in Maximum Fan Diameter - 1 x Fan(s) - 696.8 gal/min Maximum Airflow - 1500 rpm - Hydraulic Bearing - 4 PIN PWM - Blue LED - Radiator - 4.6 Year Life

Hydraulic Bearing fan bearing type for maximum cooling/heating efficiency with added dependability Blue LEDs add vibrant colors to the fan Fully compatible with standard radiators The flawless rotation of up to 1500 rpm is just what you need for prolonged cooling