Hub for cassette storage container

FIG. 1 is a perspective view of a hub for cassette storage containers showing our new design in the position of use, the broken lines showing an additional hub and a container being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is an enlarged perspective view of a hub for cassette containers showing our new design;

FIG. 3 is a front elevational view of FIG. 2 shown rotated 45 degrees;

FIG. 4 is a front elevational view of FIG. 2, the rear being identical;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view of an alternate embodiment of the design shown in FIG. 1.