ACOUSTIC GUITAR STRINGS MEDIUM: .013 .017 .026w .035 .047 .056 Ovation strings are even harder to find than Adamas strings! And Ovation produces ziltch in the way of product information about Ovation strings so there is precious little we can tell you. Oh, wait, here's some information we overlooked. These strings are made with phosphor bronze windings! : ) OVS-5119$5.47