P336320 Pirastro Flexocor cello string G-3 medium P336210 Pirastro Flexocor cello string D-2 soft P336310 Pirastro Flexocor cello string G-3 soft P336410 Pirastro Flexocor cello string C-4 soft P336230 Pirastro Flexocor cello string D-2 thick P336330 Pirastro Flexocor cello string G-3 thick