Need something more powerful than your existing ESC fan? This is exactly the fan for you. Yeah Racing Tornado Cooling Fan has Ultra High Speed. You need unmatched performance that this fan delivers. This dual ball bearing fan flows up to 100% more air than other similar Fan. Feature: For: ESC Color: Black Specification: Dimensions: 25 x 25 x 10mm Bearing: Dual Ball Bearing Operating: Voltage 5V ~ 7.2V Start-up Voltage: 3V Power: 1.40W Fan Speed: 15000 R.P.M (¡Ó20%) at 25¢J, after 5~10 min. rotating. Max Air Flow: 5.13CFM. Current: 0.28A Weight: 7.0g Connector: JST