人体工学吉他弦距调节扳手

这是一个人体工学吉他弦距调节扳手，使用通用的4mm六角扳手，打印后直接插入使用即可。

打印很快，以解近渴。

This is an ergonomic guitar string length adjustment wrench. It uses a universal 4mm hex wrench. After printing, just insert it directly for use. It prints quickly to quench immediate thirst.