Rated Voltage: DC 6V; Motor Rotary Speed: 5RPM+/-10% Shaft Size: 5 x 8mm/0.2 x 0.31inch(Dia*L); Cable Length: 120mm/4.72inch Stable and reliable performance. Low noise, high speed, high efficiency, low resistance. Apply to reduce speed in a series of gears, which in turn creates more torque Widely used on Stage lighting, alarm, electric device and so on etc...