Caster

[0001]FIG. 1 is a right-front perspective view of a caster showing my new design;

[0002]FIG. 2 is a front view thereof;

[0003]FIG. 3 is a rear view thereof;

[0004]FIG. 4 is a right side view thereof;

[0005]FIG. 5 is a left side view thereof;

[0006]FIG. 6 is a top view thereof;

[0007]FIG. 7 is a bottom view thereof;

[0008]FIG. 8 is a left-front perspective view thereof; and,

[0009]FIG. 9 is a rear perspective view thereof.

[0010]Any unshaded surfaces shown in broken or between solid and broken lines forms no part of the claimed design. The dash-dash broken lines shown in FIGS. 1-9 illustrate portions of the caster that form no part of the claimed design. The dash-dot-dash broken lines shown in FIG. 7 define the bounds of the claimed design and form no part thereof.