Gold Tone Mastertone Custom 6-String Mando-Guitar Strings .008 - .042wGold Tone FGS Bronze Wound Mando Guitar Strings, Full Set These custom gauge, guitar style strings are specially designed for use with our F 6 Mando Guitar. NOTE: Does not work with GM 6+. Features Bronze wound Nickel Plated for a warm, bright tone Ball end design for universal use Made in the USA String Gauges: . 042w, . 032w, . 024w, . 018, . 012, . 008