Features:1. Good heat dissipation performance ensures safe and efficient work.2. With high quality materials and exquisite workmanship, it is durable for long term use.3. It has perfect heat dissipation effect which can effectively prevent the motor from overheating.4. Easy and convenient to install and remove.5. Suitable for 550 / 540 motor of RC model car.Specification:Condition: 100% Brand NewItem Type: RC Motor RadiatorMaterial: Aluminum Alloy + PlasticApplicable Motor: 550 / 540 MotorApplicable RC Car: for 1/10 Scale Electric RC CarTotal Size: Approx. 45 * 40 * 60mm / 1.8 * 1.6 * 2.4inch (Width/Height/Length)Fan Size: Approx. 30 * 30 * 10mm / 1.2 * 1.2 * 0.4inchWeight: Approx. 51gPackage List:1 * RC Motor Radiator (Twin Fans)Note:Please allow slight deviation for the color and measurement. Thanks for your understanding..Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.