40mm Ultra High Speed Motor Cooling Fan Our 40mm motor cooling fan features a 7 short blades with larger brushless motor coil. Which allow higher torque to push the blade to the very high speed range of 14,000-15,000 RPM @ 8.4V Operating Voltage : 6V-8.4V RPM @ 8.4V :14,000 ~15,000 Current Draw: ~0.45A Axial option: Available in ball bearings & cooper bushing |