The guitar nut and bridge file set with 13 round files and 1 flat file, universal for string instruments, such as guitar, mandolin, bass, ukelele and banjo etc. It will make the string slots very smooth, and it working quietly.Features:Universal for string instruments, guitar, mandolin, bass,ukelele and banjo etc.13 different dimension round files for polishing the string slots, and it makes the string slot very smooth.1 flat file for burnishing the nut and bridge.Made of high quality metal, compact and sturdy.Mini size, convenient to use and carry.Specifications:Material: MetalFile Quantity: 13 Round Files 1 Flat FileItem Size: 7.7 * 3 * 1.5cm / 3.0 * 1.2 * 0.6inItem Weight: 23.5g / 0.8ozPackage Size: 8 * 3.5 * 1.8cm / 3.1 * 1.4 * 0.7inPackage Weight: 25g / 0.9ozPackage List:1 * Guitar Nut Bridge File SetNote:Please notice the round file dimension show in the picture.The item only includes the file set.