The ornamental design for a tool handle, as shown and described.
FIG. 1 is a perspective view of my tool handle;
FIG. 2 is a side view thereof;
FIG. 3 is another side view thereof, opposite the side view shown in FIG. 2;
FIG. 4 is a front view thereof;
FIG. 5 is a back view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The dashed lines outside of the claimed tool handle represent environmental structure that forms no part of the claimed design; specifically, some such dashed lines show aspects of an example tool (a hammer) with which the claimed tool handle may be used. Other dashed lines show that while a logo may (but need not) be used with the claimed design, no particular logo is claimed. All other surface(s) and portion(s) of the tool handle not shown in the figures or otherwise described in the specification form no part of the claimed design.