Stepper Motors & Diver 23H 2-phase,3-phase IP65 23H 2-phase 1.8 degree IP54 23H 2 phase 1.8 degree 23H 2-phase 0.9 degree 17H 3-phase 3.75 degree 17H 3-phase 1.2 degree 17H 2-phase 3.6 degree Nema 17 2-phase 1.8 degree 17H 2-phase 0.9 degree