FIG. 1 is a front perspective view of a gear box in accordance with my new design, showing the front, top, and one end thereof;

FIG. 2 is a rear perspective view of the gear box of FIG. 1, showing the rear, top and second end thereof;

FIG. 3 is a front perspective view of another gear box in accordance with my new design, showing the front, top, and one end thereof;

FIG. 4 is a rear perspective view of the gear box of FIG. 3, showing the rear, top, and second end thereof;

FIG. 5 is a front perspective view of further gear box in accordance with my new design, showing the front, top, and one end thereof; and,

FIG. 6 is a rear perspective view of the gear box of FIG. 5, showing the rear, top, and second end thereof.

The bottom views are not shown in any of the embodiments because said surfaces do not constitute apart of the claimed design.

The broken line showings are for illustrative purposes only and forms no part of the claimed design.