FIG. 1 is a top plan view of an ornamental design for a spoke wrench of the present invention;
FIG. 2 is a front view of an ornamental design for a spoke wrench of the present invention;
FIG. 3 is a right side view of an ornamental design for a spoke wrench of the present invention;
FIG. 4 is a rear view of an ornamental design for a spoke wrench of the present invention;
FIG. 5 is a left side view of an ornamental design for a spoke wrench of the present invention;
FIG. 6 is a bottom plan view of an ornamental design for a spoke wrench of the present invention;
FIG. 7 is a bottom isometric view of an ornamental design for a spoke wrench of the present invention; and,
FIG. 8 is a top isometric view of an ornamental design for a spoke wrench of the present invention.
