The RPG Phosphor Bronze Strings set has been specifically designed for resophonic guitars, using G tunings and gauges. As a part of La Bella's Phosphor Bronze Series, these sets are made with their exclusively formulated bronze and tin alloy, producing a brighter tone and longer string life than any other phosphor bronze set on the market. Since its introduction in the 1970s, the Phosphor Bronze Series has become a popular acoustic set for all genres of music.