They feature D'Addario's exclusive In=Out technology to give you a guitar cable with the purest signal transparency and the longest life possible. Nickel-plated plugs and oxygen-free copper ensure that Classic Series Instrument Cables remain highly conductive. Dense shielding and molded strain reliefs keep handling noise at a minimum and extend the life span of each cable. So, if you're looking for a great-sounding cable that will last forever, pick up a D'Addario Classic Series Instrument Cable.