Feature:1. Applicable Model: 390 brushed motor is suitable for 1/16 1/18 remote control cars, such as for Wltoys, for Tamiya, for HSP.2. High Efficiency: 390 brushed RC motor with precise design, high purity copper winding design, can maximize efficiency, with high temperature resistance.3. Good Features: The 390 brushed motor has low vibration, low noise, high efficiency, and can achieve maximum power conversion.4. Installation and Disassembly: 390 brushed motor is easy to install and disassemble, you can replace and upgrade the original motor.5. Heat Dissipation: The delicate shell enhances the heat dissipation performance and has good stability and excellent performance.Specification:Item Type: 390 Brushed MotorMaterial: Iron, CopperProduct Color: SilverWeight: Approx. 112g / 4.0ozVoltage: 7.2V-8.4VMaximum Speed: 21000RPMMotor Diameter: Approx. 27.5mm / 1.1inMotor Length: Approx. 46.5mm / 1.8in(Excluding Shaft)Shaft Length: Approx. 15mm / 0.6inShaft Diameter: Approx. 2.3mm / 0.09inApplicable Model: 1/16 1/18 RC Cars (such as: for Wltoys, for Tamiya, for HSP).Package List:1 x 390 Brushed MotorNote:1. Please allow 1‑3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.