The pair you see here was a custom ordered pair of speaker cables where one cable is 15ft long and the other is 10ft long. The previous owner of this pair had his system rack on the side of the room so one of the speaker cable was cut longer to reach the speaker on the further end. Terminations on either end are spades.
Cables are a very good buy now with its price being under $400. Google the brand Synergistic Research for lots of positive reviews and some very interesting cable design.