Many uses include cooling brake systems or assisting helmet cooling efforts. CFM ratings at 13. 6 volts with a 3. 5 amp draw.Pit Stop USA offers Allstar Performance 4" Heavy Duty Inline Blower - 8" Long - 240 CFM ALL13009 at low everyday prices. Be sure to check out all of our products from Allstar Performance including Allstar Performance Brake Cooler Fans and Allstar Performance Helmet Blowers.