Elixir 3-Pack Acoustic Guitar Strings Nanoweb Custom Light 11-52 16544. Many players prefer the rich, textured tone of phosphor bronze strings. These Elixir Strings capture the sweet spot of that unique phosphor bronze tone and extend it 3-5x longer than conventional strings. In addition to an ultra thin grunge-resistant tubular coating on the wound strings, Nanowebs now have a revolutionary Anti-Rust plating on the plain strings to extend their life too. Elixirs are the first major innovation in guitar strings in over forty years, and they deliver what they promise: great tone and long life no matter what you put them on or how often you play.