FIG. 1 is a perspective view of a hammer handle showing my new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a rear elevational view thereof; and,
FIG. 6 is a front elevational view thereof.
The left side of the hammer handle is a mirror image of the right side.
The hammer head and grip shown in broken lines FIGS. 1-6 are not part of the claimed design.