1. Premium Heat Dissipation Performance: Made of endothermic material, and hollow bottom design, improving the heat dissipation effect and speed.
2. Aluminum Alloy: Made of excellent aluminum alloy, this heat sink is strong, resistance, comes with a long life span.
3. Fan Slot Available: There are two cooling fan slots, and two 30 x 30mm fans can be added to enhance the cooling effect.
4. Applicable : This heat sink is suitable for 550 3650 3660 3670 3674 motor, and other motors whose diameter is 36mm.
5. Ideal Replacement: This heat sink with outstanding performance, ideal replacement for the old and damaged ones.

Specification:
Item Type: Motor Heat Sink
Material: Aluminum Alloy
Product Size: Approx. 40 x 30 x 30mm/1.6 x 1.2 x 1.2in
Applicable: for 550 for 3650 for 3660 for 3670 for 3674 and Other Diameter 36mm Motors

packing list:
1 x Motor Heat Sink