Description:This open tuned strings tuner can adjust the strings to tune easily and quickly, features a 1:21 ratio. It is mainly made 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, electric bass guitar and more, easy to install on the 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 jam. It can be a good replacement for worn or damaged tuning pins, it can be used to restore the correct tone of the string. Specification: Material: Steel. Color: silver. Size: show as picture. Note:There may be a bit of color distortion due to the different resolutions of your computer. There may be slight errors due to other manual measurement. Package Included:1 * Reed