Comparison : Item # 85576, Servobox Series Model AD 1 and 2-Stage 45 Millimeter (mm) Dimension A3 #1 Input Flange Plate for Planetary Reducers
Item # 85577, Servobox Series Model AD 1 and 2-Stage 46 Millimeter (mm) Dimension A3 #2 Input Flange Plate for Planetary Reducers
Item # 85578, Servobox Series Model AD 1 and 2-Stage 48.5 Millimeter (mm) Dimension A3 #3 Input Flange Plate for Planetary Reducers
Item # 85579, Servobox Series Model AD 1 and 2-Stage 63 Millimeter (mm) Dimension A3 #4 Input Flange Plate for Planetary Reducers
Item # 85580, Servobox Series Model AD 1 and 2-Stage 70 Millimeter (mm) Dimension A3 #5 Input Flange Plate for Planetary Reducers