Features 1、PREMIUM MATERIAL: RC motor heatsink is made of premium aluminium alloy and plastic materials for durability and long life. 2、HIGH HEAT DISSIPATION CAPACITY: RC motor cooling fan with double fan cooling capability for longer use of the RC motor. 3、TEMPERATURE CONTROL: RC motor heatsink controls the temperature to prevent the engine from overheating, allowing the unit to run efficiently. 4、UPGRADED DESIGN: RC car motor heatsink uses upgraded components that will greatly reduce the heat generated by the motor. Easy to install and remove, easy to use. 5、HIGH SPEED ROTATION: RC car motor cooling fan is designed with strong air and high speed to effectively reduce the motor running temperature. 6、PRACTICAL AND EFFECTIVE: RC motor cooling fan with high performance, fine workmanship and the possibility of using a cooling fan to guard your motor. Item Type: RC Motor Heatsink Material: Aluminium Alloy, Plastic Size: Approx. 57x50x40mm / 2.24x1.97x1.57in Size: Approx. 40x40x10mm / 1.57x1.57x0.39in Applicable: For 42mm/1.65in Diameter Motors (e.g. 4268 4274) etc. Package List 1 x RC Motor Heatsink