This fragment was once part of an uncu, a poncho-like garment worn by men. The motif is called the "key checkerboard motif" and, together with many other square motifs, the t'ocapus, it forms a fund of signs that were certainly a means of communication. From the uncus one could tell from which ethnic group the wearer came, what his position within Inca society was, and possibly also his function. However, we do not know which t'ocapu describes what, so we cannot assign the wrench motif either. The interpretations range from "constellation" to "ancestral bone".