Larsen Magnacore Arioso cello C strings offer wide-ranging freedom of expression without compromising on power. They are designed to work well with both older Italian instruments and cellos by modern makers. Magnacore Arioso cello C strings have a multi-strand steel core wound with tungsten, and a ball end. They come in 4/4 size and in medium tension, delivering full projection combined with a breadth of tonal colors.