These are very flexible cables, easy to route, with nice soft feeling coverings. The velcro ties are much appreciated, and the included white cotton gloves were a surprise elegant touch.Upgrade speaker wires, these are all heavy-duty with gold-plated connectors, each approximately 1 foot long .This pair of matched cables are the perfect length for connecting my amp to my bookshelf speakers. Or of course a single bi-amped speaker to a dual amplifier. 150 black wires with 0.1 copper wire and 150 red wires with 0.1 copper wire ensure your high-quality sound quality 2000 plug and unplug tests ensure your service life