The ornamental design for a handle, as shown and described.
FIG. 1 is a perspective view of a handle of the present invention;
FIG. 2 is a top view of the handle of FIG. 1;
FIG. 3 is a bottom view of the handle of FIG. 1;
FIG. 4 is a right side view of the handle of FIG. 1;
FIG. 5 is a left side view of the handle of FIG. 1;
FIG. 6 is a front view of the handle of FIG. 1; and,
FIG. 7 is a rear view of the handle of FIG. 1.
The broken lines immediately adjacent the surface shade lines define the bounds of the claimed design. All other broken lines represent the environment of the claimed design. None of the broken lines forms a part of the claimed design.