This is a precision 8MM micro stepper motor, widely used in digital products such as digital cameras and other small appliances.
Motor diameter: 8mm, motor height: 8.2mm, output shaft diameter: 1.5mm, gear OD: 2.2mm.Each pair of motors consists of two motors bundled with 2 different output shaft lengths: Long shaft length is 4mm / short shaft length is 3.5mm.