The Ernie Ball 12-String Slinky string pack for electric guitar are nickel wound and will give you that stunning, choral tone that the 12 string guitar is known for! These are bright, balanced and extremely responsive so whether you're playing some good old country rock or want to get a bit experimental with a bit of soloing they're going to play brilliantly!The main 6 strings have thicknesses of: 8, 10, 14, 24, 32, 40. The other 6 have thicknesses of 8, 10, 8, 11, 17, 22. For that classic, jangly tone these will no disappoint! They're also for sale with FREE next day UK delivery so get them quick and enjoy beautiful melodies in no time!