Designed for use on classical guitars, the plain strings are made of a solid nylon filament. It is similar to, but not the same as, the nylon used for fishing line. First, second and third strings are clear, ball end. This set of Earthwood 80/20 Bronze Folk Nylon Acoustic Guitar Strings from Ernie Ball is a distinct take on the classical guitar string. This pack features ball ends for easily securing strings to the bridge. The treble strings are fashioned of a solid nylon clear filament, while the bass strings are made of a multifilament nylon floss core wrapped with 80/20 bronze alloy wire. Producing a warm tone that is rich in treble with a percussive attack, this set is ideal for fingerstyle and folk players. Their soft feel is easier on the fingers than steel strings, and the ball ends make string changes a cinch.