The 1 and 2 strings are stainless steel mercerized strings, the 3.4.5.6 strings are stainless steel cores, and the outer layers are wrapped with red or brass wires.
PP bags are individually packaged, one bag per string, and the outer bag has 1-6 string standard sounds: E, B, G, D, A, E, convenient to distinguish standard sounds.
Strong tightness offering excellent resonates, extra light tension.