Shaft

FIG. 1 is a front, right and top perspective view of a first embodiment of a shaft, showing my new design;

FIG. 2 is a rear, left and bottom perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is an enlarged top plan view thereof;

FIG. 8 is an enlarged bottom plan view thereof;

FIG. 9 is a front, right and top perspective view of a second embodiment of a shaft;

FIG. 10 is a rear, left and bottom perspective view thereof;

FIG. 11 is a front view thereof;

FIG. 12 is a rear view thereof;

FIG. 13 is a left side view thereof;

FIG. 14 is a right side view thereof;

FIG. 15 is an enlarged top plan view thereof; and,

FIG. 16 is an enlarged bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the shaft that form no part of the claimed design.