apparent in subsequent discussion 0067 fig3 a and fig3 b are front and rear elevation views respectively of a portion of the present invention extending from the top of the bearing 83 and flange 84 is a threaded rod 85 or stud and bolt 86 the wheel 80 is typically attached to a connector plate not shown on a cart 5 at the threaded rod 85 and bolt 86 a caster wheel 80 such as the one shown in fig2 is able to steer i e rotate about a vertical axis because of the addition of the bearing 83 other wheels 80 are not steerable but are fixed not shown that is while the tread 81 of a fixed wheel certainly can rotate around a horizontal axis and travel on a surface 100 they cannot steer and rotate freely about a vertical axis as a caster wheel 80 can these non steerable wheels 80 not shown do not require a bearing 83 at the top of the flange 84 typically a cart 5 has four wheels 80 attached often the front two wheels 80 are caster wheels 80 while the back two wheels of the cart 5 are of the non steerable configuration attached to the wheel 80 is a coupling 15 the coupling 15 is attached to the flange 84 portion of the wheel 80 the coupling 15 which can be many shapes including cylinder or square shaped has a notch 16 removed from each side i e front and back of the coupling 15 in order to more accurately fit over the flange 84 and tread 81 for example on the front portion of the wheel 80 see fig3 a the notch.