Kitting parts carousel system

A parts carousel comprising:

• a body having a bottom which is frustoconical about an axis and which slopes downwardly in the radially outward direction, a curved junction portion contiguous with said bottom, said curved junction being a portion of a toroid about said axis, said body having an outer wall which is a geometric surface about said axis, said outer wall being contiguous with said curved junction, an inner wall contiguous with said bottom, said inner wall having a surface which is substantially cylindrical about said axis;
• a plurality of bin walls permanently molded within said body, said bin walls being substantially radial and each lying in a plane substantially passing through said axis, said bin walls adjoining said bottom, said curved junction, said outer wall and said inner wall and being formed therewith to form bins therebetween, said bin walls being of substantially constant height above said bottom whereby the downward slope of the tops of said bin walls matches the slope of the bottom of another said body which can rest upon the tops of said bin walls and completely close said bins;
• and
• a boss attached to said inner wall and a bearing within said boss, said bearing having a bearing surface about said axis of said body, said body and said bin walls being made of injection molded synthetic polymer composition material.