Guitar maintenance and repair kit: You will get a string measuring ruler with a notch on the neck of the guitar, a string ruler, a free rocker string height gauge and a guitar free rocker balance tool. Different tools can easily satisfy you Needs.Anti-rust material: Fret rocker and groove straight edge are made of stainless steel, sturdy and durable, can be used compatible with a long time, not easy to scratch the guitar.Keep the guitar collar upright: the straight side of the guitar, the free translation tool and the guitar string ruler help you measure whether the fingerboard surface is straight and check the final height after modification or replacement.Multiple uses: the string action ruler helps to measure the bridge groove, the height of the string, the height of the nut and the pickup rod, and even the depth of the free groove; the grooved straight edge ruler helps to check whether each fingerboard is in At the same level, the free rocker can span more than 3 freedoms, and you can check whether they are on the same level.Gifts: These guitar fluid tools are great gifts compatible with guitar technicians and guitarists. They can quickly maintain and repair their instruments and reduce foaming; they are electric guitars, acoustic guitars, bass, strings and folk guitars. The perfect tool compatible with etc.Colour: silverMaterial: stainless steelSize: 42x3.7CMPackage Contents:1 * Guitar neck ruler1 * String pitch ruler1 * Frets level measuring rulerOnly 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 allowed error is +/- 1-3cm.