Feature: 1. APPLICABLE MOTOR: RC motor aluminum cooling bracket, suitable for 550 3650 3660 3670 3674 36mm diameter motors, which has good compatibility. 2. HIGH EFFICIENCY: The hollow design is added at the bottom to make the contact between the motor and the air more fully, improve the efficiency. 3. WITH FAN SLOTS: The cooling bracket has 2pcs cooling fan positions, can install 2pcs 30x30mm fans (not included) to enhance the cooling effect. 4. ALUMINUM ALLOY: Made of excellent aluminum alloy, lightweight and corrosion resistant, with good heat absorption to ensure fast heat dissipation. 5. FOR RC MODELS: This aluminum cooling bracket is widely used in RC models, small and compact, does not take up the space of the equipment. Specification: Item Type: RC Motor Cooling Bracket Material: Aluminum Alloy Product Size: Approx. 60 x 40 x 28mm / 2.4 x 1.6 x 1.1in Application: Suitable for 550 3650 3660 3670 3674 36mm diameter motors. Package List: 1 x RC Motor Cooling Bracket