The ornamental design for a ratchetwrenchhead, as shown and described.
FIG. 1 is a perspective view of a ratchet wrench head showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The ornamental design which is claimed is shown in solid lines in the drawings. In the drawings, the broken lines depict environmental subject matter only and form no part of the claimed design.