The ornamental design for a combination snow brush head, as shown and described.
FIG. 1 is a top plan view of a combination snow brush head showing my new design;
FIG. 2 is a perspective view thereof looking from a lower rear corner of the combination snow brush head;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a left side elevation view thereof, the right side elevational view being a mirror image thereof.
The broken line structure that is shown in FIGS. 1, 2, 5, and 6 is for illustrative purposes only and forms no part of the claimed design.