Must Note: If you do not have a pump to supply water to the condenser, the condenser cannot coolFeatures:Water cooling fin interface diameter: 4.8MMBidirectional Water-cooled 40A 2-6s UBEC 3A 5VBidirectionalWater-cooled50A 2-6s UBEC 5A 5VBidirectionalWater-cooled60A 2-6s UBEC 5A 5VBidirectionalWater-cooled80A 2-6s UBEC 5A 5VThis product adopts imported components, full power test.It can be used in cars, ships, underwater thrusters.Bidirectional 1:1 power output, no brake,direct reverse, quick response, good handling.No need to calibrate throttle stroke, plug and play.All products contain UBEC output.Note:1. When using, the remote control throttle remote lever must be in the middle position, otherwise it cannot start.2. There is no need to calibrate the throttle stroke. When the electric adjustment is started, if the motor starts to rotate, you can use the remote control to fine-tune the throttle to stop the motor.Package included: 1pcsWelcome to our store. Before purchasing, please check whether it matches the model of the product before placing an order. If you have any questions, please contact us and we will reply you within 24 hours. Thanks!