Package include: 1 Set Guitar Neck Notched(1 pc fret rocker leveler, 1 pc neck notched straight edge)●Made of quality stainless steel, not easy to rust and deform, durable.●Size: neck notched ruler size: 16.54*1.46 inch(42*3.7 cm), fret rocker size: 3.94*1.97 inch(10*5 cm); Color: silver●Easy to use, it can help you measure whether the surface of the fingerboard is straight, and check the final height after correcting or replacing the fingerboard.●Suitable for acoustic guitars, folk acoustic guitars, electric guitars, electric box guitars, electric basses, etc.●Notice:1.Due to the reason of light and the display, the color may have slight difference. This is inevitable, please understanding!2.Please allow slight dimension difference due to different manual measurement.