ITEM NAME:RC Car 540 Electric Motor Proof Cover Heat Sink Cool Fan for HSP 7014 Blue Description: - Made from high quality aluminium and plastic, which is designed for 1/10 RC racing car with 36mm diameter motor. - 540 / 550 Aluminum Motor Heat Sink with Cooling Fan for 1:10 RC Electric Motor - Practical and durable for protecting the motor from overheating. - Operating Voltage:Â DC 5V 0.15A - Material: Aluminium Package Included: 1 x Motor Heat Sink.540 / 550 Aluminum Motor Heat Sink with Cooling Fan for 1:10 RC Electric Motor. 1 x Motor Heat Sink. Wedding Party Gift Supplies. Car & Truck Parts. - Practical and durable for protecting the motor from overheating.