Extender Tool

FIG. 1 is a top perspective view of the claimed design for an extender tool;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

The portion shown in broken lines is for illustrative purposes only and forms no part of the claimed design.