Boston Concert Series E-1 string for classic guitar, clear nylon
Boston Concert Series B-2 string for classic guitar, clear nylon
Boston Concert Series G-3 string for classic guitar, clear nylon
Boston Concert Series D-4 string for classic guitar, silverplated wound nylon, normal tension
Boston Concert Series A-5 string for classic guitar, silverplated wound nylon, normal tension
Boston Concert Series E-6 string for classic guitar, silverplated wound nylon, normal tension
Boston Concert Series D-4 string for classic guitar, silverplated wound nylon, hard tension
Boston Concert Series A-5 string for classic guitar, silverplated wound nylon, hard tension
Boston Concert Series E-6 string for classic guitar, silverplated wound nylon, hard tension
Boston Concert Series B-2 string for classic guitar, black nylon