-Fretbar Understring Leveler Fret Sanding Leveling Beam File Bar Luthier Tool For Guitar Bass Repair Maintenance

 1. The revolutionary new tool fretbar understring leveler lets you level your frets under full tension without removing the strings. You can level your frets with the strings ON.  2. Material: High quality material -CNC machined with nice oxidation blasting treatment. High glossiness, durable and long-lasting use, not easy to deform.  3. Applicable for fret, saddle, and fingerboard sanding, great accessory for players and luthiers. Suitable for the fret leveling of electric guitar, acoustic guitar, electric bass, banjo, mandolin, etc.  4. Used with the strings on or off, the precision-ground surface works quickly and accurately to get frets level.  There is a Fretbar for every leveling job:  4.5inch length (114mm) perfect for spot leveling problematic frets all over the neck. It's also perfect for creating fallaway on acoustic guitars.  9inch length (228mm) is designed for smaller necks like ukuleles and mandolins. It also works for leveling full scale necks and spot leveling.  13.8in