[Very useful]- The 5V cooling fan is designed for greater heat dissipation and prevents the engine from overheating
[Good material]- Made of high‑quality aluminum and plastic materials, it has high thermal conductivity and durability
[Easy to use]- The cooling fan can be turned on through the receiver, which is convenient and easy to use
[Good performance]- The heat sink is suitable for motors of 540, 550 and 3650 size. Combination of heat sink and cooling fan to keep the temperature under control
[Guarantee]- Our product have 180 days warranty, if you have any question about this product, please feel free to contact us, we will try our best to help you solve your problem