Ultra light 6 string set for acoustic guitar that is the very same as found on Gibson’s famous J-200 Jumbo acoustic guitar. Thanks to the special phosphor bronze alloy, strings deliver an excellent ringing attack and presence, as well as a responsive voice that cuts through. Set is packed in vacuum sealed package for extra freshness. All Gibson strings are bench tested and builder approved to bring the best sound possible. Gauges: .011, .015, .022w, .032, .042, .052.