The ornamental design for a dual-head wrench, as shown and described.
FIG. 1 is a front-right-top perspective view of the dual-head wrench showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear front elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a front-right-bottom perspective view thereof.
The broken lines in the drawings depict environmental subject matter only and form no part of the claimed design.
The dual-head wrench is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.