RS80 Rotosound Traditional Instruments string set mandolin phosphor bronze M400 Martin string set mandolin M465 Martin string set mandolin monel wound M470 Martin string set mandolin phosphor bronze wound M475 Martin string set mandolin phosphor bronze wound M-158 Galli string set mandolin G-1430 Galli string set mandolin V-039 Galli string set mandolin SMF-500 Galli Suprema string set mandolin SMF-600 Galli Suprema string set mandolin L-880L La Bella Acoustic Folk string set mandolin TH-154 Thomastik Präzision string set for mandolin TH-154S Thomastik Präzision string set for mandolin TH-154W Thomastik Präzision string set for mandolin