Fretbar Understring Leveler Fret Grinding Leveling Beam File Bar Tool for Luthiers to Repair Bass GuitarThe revolutionary new fretbar understring leveler tool allows you to level your frets under full tension without removing the string. You can align your thresholds with strings. Material: Aluminum-CNC Machining. High gloss, durable and long-term use, not easy to deform. Cuboid. Dimensions: a convenient file for grinding the luthier. Applicable for fret, saddle and fingerboard grinding, a great accessory for players and luthiers. Suitable for leveling the fret of electric guitar, acoustic guitar, electric bass guitar, banjo, mandolin, etc. Color: Black Material: Aluminum Alloy Size: Length: About 23cm/46cm/11.5cm Package Contents: 1 * Fretbar Understring Leveler Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.