Envelope 1: 2 strings .035 inches, Nylon wound Nylon;

Envelope 2: 2 strings .042 inches, Nylon wound Nylon;

Envelope 3: 1 string, must be cut to accommodate the 2-string course copper or bronze wound, .034;

Envelope 4: 1 string, must be cut to accommodate the 2-string course copper or bronze wound, .036;

Envelope 5: 1 string, must be cut to accommodate the 2-string course copper or bronze, .038