Thomastik-Infeld RONDO cello C Thomastik-Infeld RONDO cello A+D Item No. RO4142 Manufacturer Thomastik-Infeld Thomastik-Infeld RONDO cello G+C Thomastik-Infeld RONDO cello A+D, carbon steel/multialloy wound × Thomastik-Infeld RONDO cello A+D