【Brushless RC Boat Motor】3660 brushless RC motor is designed for 650-800mm Boat.Exquisite shape and exquisite craftsmanship, Surpass hobby is your good choice. 【4 Poles Design】4 poles design ensures high torque & high efficiency, offers the ship much faster acceleration response and stable output of power,The overall efficiency exceed 95 percent. 【Good Heat Dissipation】3660 brushless RC boat motor with cooling set, use advanced processing technology ensures good heat dissipation and extends the service life of the motor. 【Low Noise】 High RPM ABEC5 Oversized Bearings, Superior bearing is precision and durable with low noise and small friction. 【Solid Shell】 Made of metal material, the motor with durable shell, advanced rotor structure, high-quality shaft, high-precision bearings ,Durable, Corrosion Resistant and Great looks., Weight: 0.65918216338 pounds, Manufacturer: SHENZHEN SURPASS TECH CO.,LTD