Elixir Electric Nickel Plated Steel Strings with OPTIWEB Coating give you the performance of a natural string that crisp tone, natural feel and playable grip you know and love without sacrificing the signature long-lasting tone life of Elixir Strings. Played for the same crisp tone as an uncoated string OPTIWEB Coating provides a natural feel Electric guitar strings constructed with nickel-plated steel wrap wire Our coating technology protects against common corrosion and debris buildup, extending tone life longer than any other brand s coated or uncoated strings* Anti-Rust Plating on plain steel strings ensures longer tone life for the entire set With less hassle and expense of frequent string changes, spend more time making music