The ornamental design for a handle, as shown and described.
FIG. 1 is a top perspective view of a handle in accordance with the new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a front elevation view thereof; and,
FIG. 7 is a rear elevation view thereof.
The broken lines immediately adjacent to the shaded areas in FIGS. 1, 6 and 7 represent the bounds of the claimed design, with the lines themselves and areas within them forming no part of the claimed design.