I claim the ornamental design for a handle, as shown and described.
FIG. 1 is a left side perspective view of the handle;
FIG. 2 is a rear view of the handle shown in FIG. 1;
FIG. 3 is a front view of the handle shown in FIG. 1;
FIG. 4 is a left side view of the handle shown in FIG. 1;
FIG. 5 is a right side view of the handle shown in FIG. 1;
FIG. 6 is a top view of the handle shown in FIG. 1; and,
FIG. 7 is a bottom view of the handle shown in FIG. 1.
The subject matter shown in dashed lines, and any surfaces of the design not shown, including interior surfaces, form no part of the claimed invention.