Set of 2 Corsair Air Series SP120 LED Blue High Static Pressure Case Fans. CO-9050021-WW / CO-9050031-WW. Excellent condition. Both work perfectly. Tuned for high pressure air delivery directly to components. Blue LED-lit translucent, frosted fan blades for a dramatic effect. Specially designed fan blades and a sleeved bearing system for less vibration, noise and turbulence. 120mm x 25mm. 1650 RPM. 57.24 CFM airflow. And quiet noise level of only 26.4 decibels.