DRAGON SKIN™ - CLEAR Coated Acoustic Guitar Strings: Extra Light 10-48 (2-Pack) DRAGON SKIN™ Acoustic Guitar Strings feature DR’s K3™ clear coating on a phosphor bronze wrap wire to prevent dirt and perspiration from reaching the hexagonal core wire, preventing corrosion. The K3™ coating, which is applied to all strings in the set, is ultra-hard and doesn’t dampen vibration like softer coatings do. The strings have more projection, fewer unwanted overtones, greater clarity and articulation than uncoated strings. K3™ Coated applied to the wrap wire is extra hard to maintain string brightness while extending life The coating eliminates unwanted overtones, helping projection, clarity and articulation A Phospor Bronze Wrap Wire on a hexagonal core delivers exceptional brightness and flexibility