Feature: 1. Premium Material: Made of high quality aluminum alloy and plastic materials, durable and long service life. High performance and fine workmanship. 2. Good Heat Dissipation: Double fan heat dissipation, strong heat dissipation capacity, to protect your motor, to make the remote control car use longer. 3. Reduce Motor Heat: The upgraded components will greatly reduce the heating of the motor, convenient installation and disassembly, easy to use. 4. Main Functions: Cooling fan can control temperature, heat dissipation, prevent the engine from overheating, and make the equipment run efficiently. 5. Reduce Motor Temperature: Dual fan motor radiator adopts strong wind high speed design, can effectively reduce the motor operating temperature. Specification: Item Type: Dual Fan Motor Heatsink Material: Aluminum Alloy + Plastic Weight: Approx. 134g / 4.7ozVoltage: 8.4V Maximum Speed: 16000RPM Fan Size: Approx. 40x40mm / 1.6x1.6in Radiator Size: Approx. 80x64.2x57.2mm / 3.1x2.5x2.3in Application: Suitable for Brushless Motors with a Diameter of 55mm/2.17in, 56mm/2.2in, 58mm/2.28in (such as: 5682/5692/56112 Brushless Motor), Suitable for 1/5 Remote Control Car . Package List: 1 x Dual Fan Motor Heatsink Note: 1. Since it is manual measurement, please allow an error of 1‑3mm, thank you!2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. The motor is not included in the delivery.