I claim the ornamental design for a two sided manhole step, as shown and described.
FIG. 1 shows a perspective view of a two sided manhole step.
FIG. 2 shows a top view of the two sided manhole step shown in FIG. 1, the bottom view being a mirror image of the top view.
FIG. 3 shows a right side elevation view of the two sided manhole step shown in FIG. 1, the left side elevation view being a mirror image of the right side elevation view.
FIG. 4 shows a front view of the two sided manhole step shown in FIG. 1; and,
FIG. 5 shows a rear view of the two sided manhole step shown in FIG. 1.
Portions or features of the two sided manhole step shown in broken lines in the drawings form no part of the claimed design.