This is a guitar string rust removal pen specially made for string instruments, designed to help customers better maintain and maintain their daily instruments. Our rust removal pen is made of materials and can be used for a long time, you should not miss it. Features -Color: As shown -Material: Wood, sponge -Size: About 7.30X2.50X2.20cm/2.87X0.98X0.86inch -You can easily put them in , and they will not be damaged even if they are left unused for a long time. -They have small size and light weight, which allows them to be easily carried around. -Regular maintenance of your guitar helps to extend the life of your guitar and keep the strings in good condition. -It has a wide range of applications, simple method of use, and quick and convenient operation. -You can take it with you, and perform self-inspection and maintenance of the instrument anytime and anywhere. Package list: 1