2 Phase Hybrid Stepper 16H 2-phase 1.8 degree 16H 2-phase 0.9 degree 14HR 2-phase 0.9 degree 14H 2-phase 0.9 degree 14H 2-phase 1.8 degree 26HY 2 phase 1.8 degree 11H 2-phase 1.8 degree 8H 2-phase 1.8 degree 6H 2-phase 1.8 degree