Thank you, it seems to be good quality product, but did not checked yet. The product was very well packaged. Fast shipping.
very important if you use this with a 3d printer and stepper driver, remember to invert the green and red cable (side motherboard) otherwise the motor never function well and you listen only loud bzzzzzz, losed 1 day to understand this for this reason 3 star otherwise 5 star, very strong motor, I suggest to the seller to put this information in the description,