The ornamental design for a handle, as shown and described.
FIG. 1 is a perspective view showing the new design for a handle;
FIG. 2 is a top view thereof;
FIG. 3 is a front view thereof, a rear view being a mirror image thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a left side view thereof; and,
FIG. 7 is a disassembled front view thereof.
The broken line showings of the head in FIGS. 1 through 7 are provided for purposes of environment and forms no part of the claimed design. The end of the handle in FIG. 7 which engages the head is depicted in broken line for since it forms no part of the claimed design.