High end neodymium strong magnetic inner rotor brushless motor and high-speed turbine fan in stock, all fans come with packaging with bubble bags, visually indicating that they are new unused fans. The transparent turbine casing of the fan is beautifully crafted, with a neodymium strong magnetic inner rotor 39mm brushless motor, front and rear NMB , and aluminum alloy casing brushless motor with heat dissipation slots. The fan runs smoothly and the operating sound is relatively quiet compared to high-speed fans of the same type. This fan does not come with a brushless drive and needs to be equipped with its own brushless drive to operate. It can also be driven to operate using brushless electric adjustment. Colour:As Shown Material:Plastic + Metal The tested voltage of the fan can run from 12 to 24V. When using 12V, the fan does not generate much heat. When using 24V, the motor generate significant heat when running at the highest speed. Specific usage needs to be tested by oneself. The tested speed and power of the fan under different voltages are as follows: Voltage 12V, current 1.1A, power approximately 13W, speed 14000 rpm. Voltage 18V, current 2A, power approximately 36W, speed 19000 rpm. Voltage 24V, current 2.8A, power approxi Package Contents: 1 * brushless motor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.