Ernie Ball 2158 COATED SLNKY ACOU STRNGS LIGHT 2PK This money saving 2-pack of Ernie Ball Slinky Acoustic Guitar Strings features patented coated Titanium RPS Technology that resists rust and grime for bright and powerful tone time after time Ernie Ball's titanium coated 2158 Slinky Acoustic Guitar strings are stronger and longer-lasting than traditional strings-either coated and uncoated strings That's thanks in part to an exclusive protective coating on both the wrap wire and the plain strings as well as a patented winding of titanium wire around the lock twist of the ball end Staying true to Ernie Ball's heritage of superb craftsmanship and sound quality, Slinky guitar strings are made with the finest and freshest raw materials, resulting in a crisp ringing sound with pleasing overtones Enhancing the inherent string quality and freshness is Ernie Ball's string packaging