Blue fan.
For sale is a HIGH SPEED COOLING Fan for most 1:10th scale RC car and boat heatsinks.
Need something more powerful than your existing motor / ESC fan? This is exactly the fan for you. Yeah Racing Tornado Cooling Fan has Ultra High Speed. You need the unmatched performance that this fan delivers. This dual ball bearing fan flows up to 100% more air than other similar sized fan.
FOR DEMO VIDEO GO TO or CLICK ON LINK: http://www.youtube.com/watch?v=muH9TVsbNjY
NOTE- Video shows fan being hooked up to a 7.4 volt battery. This is NOT RECOMMENDED. This is a 5 volt fan and connection to 7.4 volts will shorten the life of the fan and void all warranties.