Rooted in generations of D’Addario string making expertise, Pro-Arté Nylon 80/20 Bronze is our archetypal classical set, with a little extra brightness. The bass strings are made with a multifilament nylon core and wound with 80/20 Bronze, to create a shimmering acoustic tone. Pro-Arté Nylon 80/20 Bronze bass strings provide a uniquely bold and bright sound for your classical guitar.