The Elixir 11027 Nanoweb 80/20 Bronze Acoustic Guitar Strings - Custom Light 11-52 are designed to enhance the tone of your guitar. They coat each string with their patented, ultra-thin NANOWEB coating to protect the outer surface of each string and the gaps between the windings. This helps reduce the buildup of gunk and grime which can dull your tone. The anti-rust plating on the strings will help ensure a longer tone life for the entire set.