The ornamental design for a container with set of toothbrush handles and removably connectable heads, as shown and described.
FIG. 1 is a top front perspective view of a container housing toothbrush handles and toothbrush heads removably connectable to the handles showing a new design;
FIG. 2 is a bottom rear perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a left side elevation view thereof; the right side elevation view thereof being a mirror image;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines showing a set of toothbrushes and replacement heads illustrate portions of the container with set of toothbrush handles and removably connectable heads that form no part of the claimed design.