What's in the box:

Motor Cooling Fan Motor Radiator Heatsink with Thermal Sensor for 3600 Series Motor 550/540 Motor Compatible with Traxxas Hsp Redcat Rc4wd Tamiya Axial Car (Black)

Features:
This RC motor heat sink is specially designed for brushless motor 3600series and Brushed motor size of 550/540.
The RC heat sink with a thermal sensor is equipped with a 5-10V cooling fan to protect your motor.
The thermal sensor will accurately detect rising temperature, when the motor is up to 40?, the cooling fan will automatically turn on to cool the motor.
The cooling fan can be powered up from the receiver, convenient, and easy to use.
With high-quality material and exquisite workmanship, the heatsink is durable for long term use.

Specification:
Item name: Heatsink Cooling Fan with Thermal Sensor
Material: Metal, Plastic
Color: Golden,Red,Blue,Black (optional)
Fan input: 5-10V
Fan size: 30 * 30 * 17mm
Weight: 24g
Suitable for motors: blushless motor 3600series; Brushed motor size of 550/540
Package size: 8*7*3.5cm
Package weight: 26g

Note: There could be a few deviations due to manual measurement or slightly color difference as the result of the shooting scene. Thank you for your understanding.

Package listing:
1 * Heatsink Cooling Fan with Thermal Sensor