90%New Old items shown the photo. Turbine front and back plastic material CAP removable if you don`t want it. Speed: 35000 rpm Input Voltage: DC 12V Maximum current: 24A Maximum power: 380W Maximum thrust: 1200g KV value: 3100 Maximum speed: 52000RPM (loud voice) Number of poles: 6 Winding connection: Y-type 5-wire and around ESC voltage: 5VPackage include: Turbine + Brushless 40A ESC(Electronic Speed Control)  Notice:Don`t wiring the turbine directly to Power.This have to connected up Driver ESC electronic speed control.   Don`t Let the turbine contact with car iron part(because of other iron part also negative electrode "-") This pressure increase is very effective. Don't compare it with the cheaper products of the same trade. It's definitely not a grade. This manual control motor speed. This kind of modification is more violent, and the wind pressure is very high. Suitable for customers who require high performance improvement A 70mm Top Violent Supercharging Fan Automobile Supercharging Violent Fan Automobile Refitted Pumping Fan, Special Fan for Automotive Electric Turbine The diameter of air inlet and outlet is 7cm/7.5cm Motor Length 10cm Motor Material Metal Shell Blade Metal Leaf Moderate volume and easy installation 100% original authentic product. Please operate according to the following operation mode: a. Power off first b. Esc switch knob is screwed to the minimum position. C. To connect dc 12 volt battery. Step The first step is to insert the three-needle plug into the out position of the tester. The white line is on the s-pole. There are three rows of arbitrary plugs in one row, and the knob is set to the minimum position. The second step is to weld the three rows of motor wires with the three wires adjusted by electricity without any color difference. After welding, tape should be wrapped to prevent short circuit. The third step is to connect a DC 12 volt power supply to an electrically regulated red connection positive pole and a black connection to the negative pole. After power on, the motor will make a sound, stop ringing after a few seconds, then slowly twist the knob of the tester to start the motor, the normal operation of the wind is from the motor tail discharge, if not to indicate that the motor reversed, the need to remove two of the motor wires to adjust and then welding, then the motor works properly. If you can follow my instructions carefully, there will be no problem with the product. If you have any questions, please feel free to contact us.