US D468538 S1
FIG. 1 is a perspective view of my ornamental design for a toothbrush head with stepped bristle array;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a side view thereof, the opposite side being a mirror image of that shown.