Sharpening Tool

FIG. 1 is a left-front-top perspective view of a sharpening tool showing my new design;

FIG. 2 is a left-side view thereof;

FIG. 3 is a right-side view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawing represent portions of the sharpening tool that form no part of the claimed design.