P41A021 Pirastro Perpetual violin string set medium P41A221 Pirastro Perpetual violin string A-2 medium P41A321 Pirastro Perpetual violin string D-3 medium P41A421 Pirastro Perpetual violin string G-4 medium P420021 Pirastro Perpetual viola string set medium P320121 Pirastro Perpetual viola strin A-1 medium P420221 Pirastro Perpetual viola string D-2 medium P420321 Pirastro Perpetual viola string G-3 medium P320421 Pirastro Perpetual viola string C-4 medium P333020 Pirastro Perpetual cello string set medium P333120 Pirastro Perpetual cello string A-1 medium P333220 Pirastro Perpetual cello string D-2 medium P333320 Pirastro Perpetual cello string G-3 medium P333420 Pirastro Perpetual cello string C-4 medium P333330 Pirastro Perpetual cello string G-3 heavy P345020 Pirastro Perpetual double bass string set P345120 Pirastro Perpetual double bass string G-1 medium P345220 Pirastro Perpetual double bass string D-2 medium P345320 Pirastro Perpetual double bass string A-3 medium P345420 Pirastro Perpetual double bass string E-4 medium