FIG. 1 is a perspective view of a first embodiment;

FIG. 2 is a front orthographic view of the first embodiment;

FIG. 3 is a rear orthographic view of the first embodiment;

FIG. 4 is a left side orthographic view of the first embodiment, the right side orthographic view being symmetrical;

FIG. 5 is a top plan view of the first embodiment;

FIG. 6 is a bottom plan view of the first embodiment;

FIG. 7 is a perspective view of a second embodiment;

FIG. 8 is a front orthographic view of the second embodiment;

FIG. 9 is a rear orthographic view of the second embodiment;

FIG. 10 is a left side orthographic view of the second embodiment, the right side orthographic view being symmetrical; and

FIG. 11 is a top plan view of the second embodiment; and,

FIG. 12 is a bottom plan view of the second embodiment.