This is the Yeah Racing 25x25x10mm Tornado High Speed Cooling Fan in Black color. This fan features dual ball bearings and is great for ESC's and other applications.

Specifications:

• Dimensions: 25x25x10mm
• Bearing: Dual Ball Bearing
• Operating: Voltage 5V ~ 7.2V
• Start-up Voltage: 3V
• Power: 1.40W
• Fan Speed: approx. 15000 R.P.M after 5~10 min. rotating.
• Max Air Flow: 5.13CFM.
• Current: 0.28A
• Weight: 7.0g
  
• Connector: JST