Features: It has 3 different crowning grooves and 1 full side with grit that use for fret ends dressing and fret leveling.The small slot works for extras narrow frets, likes ukuleles; Medium slot works for all standard guitars, bass, banjos, etc; Large slot works for big frets. That means it'll work on most stringed instruments. Square handle is more suitable for human hand gripping.It fits more and won’t slip.It is easier to apply pressure. Square file design can be not only used to level the tops of frets, but it can also be used to file some sharply fret ends. High strength emerys electroplating process brings a longer service life, sharper filing, and higher working efficiency. With its compact size and versatile design, this file is the perfect addition to any guitarist's toolkits, helping you achieve the perfect sound with ease. Specifications: Material: Carbon Steel+Wooden Handle Length: Approx. 23cm/9.05inch Package Includes: 1x Fret Crowning File note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.