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-100% Genuine SUNNYSKY motor.
-Imported NMB Bearings and Stainless steel solid shaft, quadruple strength improved.
-Aviation Aluminum motor cover, make the motor much more durable.
-Manual Winding 99.99% Oxygen free Copper wires, assure the high efficiency and quality.
-Warranty: within 7 days, any problem without human cause, goods can be returned or replaced.
As the bearing of motor is vulnerable, we have no warranty of the bearing!