Yeah Racing Hacktronic Tornado High Speed Ball Bearing Fan 25mm For ESC #HTN-304 For: 1/10 ESC, Length: 25mm, Width: 25mm, Height: 10mm Operating Voltage: 5-7.2V, Start-up Voltage: 3V, Power: 1.40W Fan Speed: 15000 R.P.M (20%) at 25, after 5~10 min. rotating Max Air Flow: 5.13CFM., Current: 0.28A Lead Wire: L=30mm (+)Red (-)Black, Connector: YR ESC Plug