This is a 6' pair of Synergistic Research 12g x 4 bi-amp wire. It can be used as a bi-wire or a bi-amp configuration. Either way it is a great deal for a fantastic set of wires. The ends are terminated with WBT angled banana's on one side and WBT straight banana's on the other. The value of the WBT's alone is over $700!! The wire is 99.999% OFC American made copper. They are in perfect condition. Have you seen the PRICE of Synergistic speaker cables? This is a no-brainer if you want a high end cable for a fraction of the cost! They are in PERFECT condition!