This is six feet of high-quality, beautiful and durable 18% nickel-silver fret wire, in handy 12-inch lengths with a slight radius. This fret wire perfect for use in repair work on an existing electric and acoustic guitars, electric and acoustic basses and other standard-to-larger sized stringed instrument. It is also great for new instrument building. Fret wire specs: Crown Width: .110 inch (2.79mm), Crown Height: .053 inch (1.32mm), Tang Depth: .074 inch (1.88mm). A slot width of .023 inh is recommended for best results when installing this fret wire.