FIG. 1 is a perspective view of a putting head according to the present design;

FIG. 2 is a front view of the putting head of FIG. 1;

FIG. 3 is a left side of the putting head of FIG. 1;

FIG. 4 is a right side view of the putting head of FIG. 1;

FIG. 5 is a back view of the putting head of FIG. 1;

FIG. 6 is a top plan view of the putting head of FIG. 1; and,

FIG. 7 is a bottom plan view of the putting head of FIG. 1.

The broken lines in the figures are for illustrative purposes only and form no part of the claimed design.