.017 There are 4 products.

The value "0.17" is generally used to indicate the thickness of the guitar string in millimeters. More precisely, it is the thickness of the thinnest string in a set of folk guitar strings. Folk guitar string sets are usually made up of strings of different diameters, each producing a different note when played on the guitar.

In the case of the string you purchased, it is the thinnest in the set and has a diameter of 0.17 mm. Thicker strings in the same set can have diameters up to about 0.70 mm. Folk guitars are often used to play acoustic music and thicker strings are often preferred for more aggressive playing styles or to produce a louder, richer sound.