These are TEST FIRE discs. They are imperfect in almost every way because they were made while trying to test the molding process and the different plastic types. They may or may not have been throw during testing.
The weights might be too light or too heavy. The discs might be rock hard or very floppy. The discs most likely will have imperfections, flaws, and seem “incomplete” because they are exactly that– imperfect, incomplete test fires. Since these are test discs made during extensive R&D (research and development) they are 100% prototype tests and are very unique. Some of the discs have writing on them since we were tracking weight results, different percentages of polyurethane, ABS, and polypropylene plastics, firmness results, heat settings, and pressure settings on the molding machine.
You will receive two prototype “test fire” discs and it is very likely there will be no others exactly like them, or at least very few like them in existence.