The ornamental design for a handle, as shown and described.
FIG. 1 is an isometric view of a handle showing our new design in environmental use;
FIG. 2 is an isometric view of the handle shown in FIG. 1;
FIG. 3 is a front view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof; and,
FIG. 8 is a back view thereof.
The broken lines shown in FIG. 1 represent environmental subject matter and form no part of the claimed design. The broken lines shown in FIGS. 5, 7, and 8 represent unclaimed subject matter and form no part of the claimed design.