This WooLee Winder will fit the Ashford Electric Spinner 3 as well as model 2, which is the rectangular-shaped ones. The WooLee Winder consists of the flyer and one bobbin and uses the whorls from Ashford so the ratios remain the same as with your stock flyer.
Note: The difference between the model 1 and 2&3 is how the flyer connects to the motor.
The model 2&3 has a flat spot on the flyer shaft. The older model 1 has a U-shaped cut in the shaft.