new and high quality. Specially designed for the leveling of guitar necks. The guitar leveling bar itself comes with four different pieces of self-adhesive sandpaper that can be polished to varying degrees. The black is used for rough grinding, the gray is used for fine grinding, and the white used for polishing, which makes the guitar look new. It works well with most guitars, special for electric guitars, an ideal tool for checking the straightness and flat of the guitar fretboard and frets. It is a necessary operation before you begin a performance. Great for checking guitar neck straightness and flat of the fretboard and frets. Colour:Silver Material:Zinc alloy + iron Package Contents: 1x Guitar Fret Ruler kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.