RC Boat 3.175mm 1/8" Shaft Strut Rudder Propeller 2385 Motor for RC Speed Boat 3.18mm flexible shaft, bracket, rudder, 30mm two-blade copper propeller, 2835 brushless motor, power kit Product name: 40A marine water-cooled bidirectional ESC Bidirectional ESC can control the forward and reverse rotation of the motor and can reverse. The ESC has a water cooling plate, and the water pipe can be connected to cool the ESC. It can be used for a long time to avoid high temperature burning of the motor. Motor end banana plug: 3.5mm Battery end plug: T plug (default) The plug has been welded and waterproofed and can be used directly after purchase. When using, the ESC needs to be connected to water cooling, water pipe water pump or water suction rudder. There are 2 metal nozzles on the ESC to connect the water pipe with an outer diameter of 4mm. Support voltage: 2S - 3S lithium battery (voltage 7.4v -11.1v) The battery capacity supports a capacity below 20ah. (20000 mAh) Battery: The voltage and capacity cannot be exceeded. Volume: 74*25*14.5mm Water cooling nozzle outer diameter: 4mm Connecting water pipe size: 3x5mm Weight: 46g Accessories list: 1X 2835 brushless motor with water cooling jacket (2s-3s) 1X 350mm soft shaft 1X 250mm copper shaft sleeve 1X 250mm wear-resistant pipe 1X shaft support bracket 1X 3.17mm white plastic washer 1X 43cm diameter two-blade copper propeller 1X 52mm rudder 1X rubber bellows 1X M6 water nozzle 1X 1 meter silicone tube 1X silicone tube aluminum sleeve 1X aluminum alloy chuck 1x M2 pull rod 1x 40A ESC 1x motor seat