The ornamental design for a head for a golfclub, as shown and described.
FIG. 1 is a perspective view of a head for a golf club showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a left side view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 2 thereof; and,
FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 2 thereof.
The evenly spaced broken lines depict portions of the head for a golf club that form no part of the claimed design. The dot-dash broken lines are included as boundary lines and form no part of the claimed design.