This is a pair of 200 step per revolution unipolar (6 wire) stepper motors with a 30.75:1 gearbox (approx) giving 6150 steps per revolution. The motors are rated at 12 V 0.34A and have 35 ohm coils. The motor section is 1.4" square, the gearbox is 1.5" in diameter, and the motor/gearbox is 1.85" long. The shaft is 0.25" diameter by 0.7" long.
The motor is made by Applied Motion Industries and it is their size 14. Other size 14 motors have a holding torque of 8 in oz. With a 30 to 1 gearbox this translates to about 250 in oz at the shaft.
I have used these motors for RA drives in the past and they perform well. I am selling the pair for $50 shipped. I am new to selling on Astromart, but I can offer references on another site.