Check the listing for details. Curt Mangan Phosphor Bronze Acoustic Guitar Strings; gauges 13-56. Condition: New. Listed at 12.99 USD. This sale is for 1 set (6 strings per set) of brand new Curt Mangan Fusion Matched Phosphor Bronze Acoustic Guitar Strings; gauges 13-56. Product Information:Individually boxed... new... never opened or used!Gauges: 13-17-26w-36-46-56Phosphor Bronze wound strings were introduced in the early Seventies and have become the most popular acoustic string. Phosphor bronze wire is made from approximately 92% copper, 7% zinc and 1% phosphorous. These strings provide nice highs and lows, as well as pleasant subtle overtones. Phosphorous is used to help reduce tarnish and corrosion.Total Length: 43"All Curt Mangan guitar strings are made with USA made wire.Fusion Matched was intended to describe the proprietary thought process Curt Mangan Strings used to create the recipe for each and every single string gauge they offer which included the choice on wire maker, custom-built machines, core-to-wrap ratios and other key factors essential for the tone, intonation and longevity they wanted to obtain. It truly represents the fusion between player, industry, and handmade production. Shipping Information: International Shipping: Please use Ebay's Global Shipping Program. We promise fast shipping (usually within 1 business day). US and international orders welcome! Shipping will be handled by USPS. USPS Express Mail (overnight) is available (U.S. orders only). Thank you!