【ALL-METAL GEARS】: High-temperature resistance, high abrasion resistance, strong load capacity, sturdy and durable, effectively protect the gear motor body. 【PURE COPPER WIRE CORE ROTOR】: With precision winding technology, the geared motor power instant increased by 30%. 【D SHAPED OUTPUT SHAFT】: high hardness steel, good toughness, impact resistance, the quality of the bearing and the life of the gear motor are improved, extremely durable. 【POSITIVE-NEGATIVE ROTATION】: You also can adjust the speed, but the motor speed can only be reduced, can not be raised. Low noise and high torque, such as 10rpm can drive 15 kilograms. 【RELIABLE GURANTEE】: Any quality issues, we promise 100% unconditional return . If you need other voltage and rpm, please feel to !