Musiclily Pro 4.5 Inch Aluminum Fretbar Understring Leveler Fingerboard Fret Sanding Leveling Beam File Bar Luthier Tool for Guitar Bass Repair and Maintenance

For electric guitar bass understring fret sanding leveling
Length: 114mm(4.5 inch), width: 19mm(3/4 inch), height : 37mm(1-29/64 inch)
Made of aluminum, with precise digital CNC processing technic, stable and durable
Lets you level your frets under full string tension and playing conditions without removing the strings, making the job accurate and fast. You need self-adhesive sandpaper to use this fret leveler
Package includes: 1pc understring fret leveler