This is six feet of beautiful, high-quality German-made 18% nickel-silver fret wire, in handy pre-radiused 8-inch lengths. It has a slight radius (arc), which can be adjusted as necessary to match your instrument. The radius is roughly 10.5" This fret wire can be used to repair/replace frets on an existing guitar, or for new instrument building. The dimensions are as follows: Crown Width: .080" (2.03mm); Crown Height: .043" (1.09mm); Tang Depth .050"; (1.25mm). Recommended Slot Width: .023"