Available sizes and resolutions for Lin Engineering's line of High Accuracy Motors are as follows:
5704 Series - Nema 23, 0.45 degrees
3509 & 3609 Modular Series - Nema 14, 0.9 degrees
414 & 416 Series - Nema 14, 0.9 degrees
4109 & 4209 Series - Nema 17, 0.9 degrees
417 Series - Nema 17, 0.9 degrees
5609 and 5709 Series - Nema 17, 0.9 degrees
8609 Series - Nema 34, 0.9 degrees