DescriptionRiption This open, preset string tuner can adjust the strings to tune easily and quickly, the possibility of a ratio of 1:21. It is mainly composed of high-strength steel, has a long service life and is resistant to deformation, can be used for a long time. You can use it on vintage bass guitar, bass guitar and more, easy to install on bass. It is easy to use, the surface is plated to make it smooth, you can use it conveniently, it will not be easy to be blocked. It can be a good replacement for worn or damaged tuning pins, it can be used to restore the correct sound from the strings of the characters. Specification: Material: Steel. Color: silver. Size: show as the picture. NoteThere may not be some color distortions due to the different computer resolutions. There may be slight errors due to different manual measurement. Package Included:1*Tuning.