... ;high stability and long life-span Technical Parameters: Model: TDM-004-1Dimension: 16", 18", 20", 22", 24", 26", 28"Rated Voltage ... . Simple structure but pretty appearance. 6. In a word, this motor is characteristic of its big torque, high efficiency, low noise ... . Available colour: Silver white 8. Last but not least,our motor has passed the Germany TUV Rheinland CE Certificate.