Plunger with graduated shaft diameter.
Reference:
2A-2676-1
2A-2676-2
Select manufacturer to view game compatibility

1/8 inch diameter by 3/8 inch long

Plunger - step shaft

USE 3B-7127-MM (3-D printed)

3-D printed drive pawl for step unit

3-D printed drive pawl and plunger assembly for step unit.