These are designed to be used to slightly widen your existing nut slots if you are encountering binding in the nut (that ping sound you get when tuning) or if you want to move to a thicker gauge string.
6x Guitar Nut files Gauged Nut Slotting File Set Sturdy Portable Practical
3Pcs/Set Guitar Nut Files Fret Crowning Slot Filing Luthier Repairing Tool Kit
10Pcs Guitar Nut Files Slot Filing Luthier Repair Saddle Slot Bass Care Tools
4 String Bass Guitar Nut Files 45-105 Gauge (45, 65, 85, 105)
Guitar Nut Files Set Stainless Steel Fret Crowning Slot Filing Luthier Repair
