FIG. 1 is a top perspective view;
FIG. 2 is a top plan view;
FIG. 3 is a bottom perspective view;
FIG. 4 is a bottom plan view;
FIG. 5 is a front elevation view, which is the same as the rear elevation view; and,
FIG. 6 is a left side elevation view, which is the same as the right side elevation view of the invention.
The ornamental design for a rubber basket strainer, as shown and described.