Yeah Racing Tornado High Speed Cooling Fan Blue 30x30mm For Motor Heat Sink #YA-0180BU For: ESC / Heatsink / Motor, Dimensions: 30 x 30 x 10mm, Bearing: Dual Ball Bearing, Operating: Voltage 5V Start-up Voltage: 3V, Power: 1.40W, Fan Speed: 14000 R.P.M (20%) at 25, after 3 min. rotating. Max Air Flow: 5.501CFM., Current: 0.28A Weight: 9.0g, Connector: JST