TOOGOO(R)18pcs Classical Guitar Fret Wire Fretwire Set 2.0mm Precut Width Silver A complete set of 18 pcs fret wires. Fit for 38 inch classical guitar. The length ranges from 1.92in/48.7mm (shortest) to 2.40in/61mm (longest). Each fret crown width is approx. 0.08in/2.0mm. Color: Silver