FS50BT x2 set guitar strings YAMAHA/Yamaha anti-last strings/acoustic

FS51 .012 inch //FS52 .016 inch //FS53BT .025 inch //FS54BT .032 inch //FS55BT .042 inch //FS56BT .052 inch Rust-proof strings with Yamaha's newly developed Anti-Rust Technology. Overview Loose String Support/Inquiry The wire-wound strings for strings 3 to 6 are coated with a very thin coating to prevent rust, and are characterized by a very natural tone and playability. *Only 3rd to 6th strings are rust-proof. FS51 and FS52 are included for the 1st and 2nd strings. *Product color may differ slightly from actual color