P231020 Pirastro Oliv cello string set medium P231140 Pirastro Oliv cello string A-1 medium (22 1/2) P231240 Pirastro Oliv cello string D-2 medium (27) P231340 Pirastro Oliv cello string G-3 medium (28 1/2) P231440 Pirastro Oliv cello string C-4 medium (36 1/2)