Longevo Series Nickel Plated Steel Electric Guitar Strings are shielded with a nano-technology
treatment that creates an imperceptible microfilm around them, giving your strings an exceptionally long life and even making them playable by those who are allergic to nickel. This eco-friendly series of strings is totally free of chemical products, completely ecologically sound and biocompatible and has no impact on the environment, while at the same time providing the tonal characteristics, elastic properties and feel that your expect from a premium guitar string.