Five pole stepper motors. High precision Japanese manufactured automation equipment. Will do half steps of 0.36 degrees per step (1000 steps per revolution) when using 4-5 phase excitation with similar holding torque capabilities.
Form factor is similar to NEMA 23 but is not perfectly compatible. NEMA 24 is a closer match. See product dimensions photo. I can provide an electronic copy of the user guide if desired.
This could be an enormous upgrade to the standard two pole stepper motors that came with your 3D printer. I have drivers and pulse generators available in other auctions.
I'll bundle auctions for discounts in shipping.