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Amazon.com: StewMac Gauged Nut Slotting File Set for Acoustic Guitar, for Light/Medium Strings - Set of 6 : Musical Instruments
Guitar nut and saddle shaping file set, 3 files - Philadelphia Luthier Tools & Supplies, LLC
Music Nomad 5-piece Bass Guitar Diamond-coated Nut File Set : Target
Amazon.com: SAPHUE Guitar Nut File Set and Bridge Saddle Fret Nut Slotting Files Set for Gibson Electric Guitar Acoustic Guitar Ukulele Bass Banjo Mandolin with 13Pcs Needles and 1Pcs flat file Repair
Ibanez 4449EG6X Nut File Set – Thomann United States
Gauged DiamondCut™ Nut Slotting File Set for Electric Guitar - StewMac