The use of the new technology with carbon made exclusively from longitudinal fibers gives these PETZ bows + fantastic flexibility and bounce + noticeably more response and sensitivity over the entire length + the articulation and resonance of excellent pernambuco bows »Uni N« violin bow made from unidirectional carbon Nickel fitting Ebony frog with Parisian eye three-part button stamped »Uni N« The biggest step so far in the development of carbon bows for professional musicians.