QUANTUM NICKEL ELECTRIC GUITAR STRINGS Dragon Skin+™ strings sound huge, are easy to play, and have outstanding endurance. Dragon Skin+ upgrades both the core and the wrap wires to be exceptionally musical, balanced, and loud. Accurate Core Technology™ creates grooves on the core to cradle the wrap wire, allowing the strings to ring out to their full potential. Designed to feel and sound better, Dragon Skin+ is unlike anything out there. The difference is real.