The ornamental design for a brush handle, as shown and described.
FIG. 1 is an isometric view of a brush handle;
FIG. 2 is a top plan view of FIG. 1;
FIG. 3 is a side elevational view of FIG. 1, the opposite side being a
mirror image;
FIG. 4 is a front elevational view of FIG. 1; and,
FIG. 5 is a rear elevational view of FIG. 1.
The broken lines showing a hairbrush head and/or a decorative ring in the
views are for illustrative purposes only and form no part of the claimed
design.