Ready to add to your collection of guitar repair tools is a set of nut files. These files are for slotting and fitting a new string nut, and will work for both bone and ABS, guitar, mandolin, banjo, ukulele, etc. Set of 13 files in multiple sizes on one ring. Whether you're a seasoned luthier or just looking to do some minor repairs on your own at home, these are a staple for your box of tools. See our listings for new and used guitar parts and luthier supply, new listings added daily.