FIG. 1 is a front perspective view of a handle showing our design; FIG. 2 is a top plan view thereof; FIG. 3 is a right side elevational view thereof; the left side elevational view being a mirror image thereof; FIG. 4 is a front elevational view thereof; and, FIG. 5 is a rear elevational view thereof. The broken lines in the Figures are for illustrative purposes only and form no part of the claimed design.