Description This dust-free liquid colophony is designed for string instrument like erhu, violin, and cello. It ensures a clean and smooth performance by removing dust and dirt from the strings. The product comes with a convenient string wiper, making it easy to apply the colophony oil evenly in the strings, enhancing their longevity and sound quality. Features -Color:Multi -Material:Liquid -Size:7.50X3.70X3.70cm/2.95X1.45X1.45in -Precision formula: enhances sound quality, making every performance silky smooth -Wide compatibility: suitable for erhu, violin, and other string instrument, meeting performance needs -Liquid form: easy to apply, prevents dust from spreading, and keeps the playing environment clean -Longlasting effect: reduces the need for frequent application, allowing you to focus on musical expression and improve practice efficiency -String protection: prevents wear and tear, extends the lifespan of the instrument, and maintains its optimal conditionPackage list: 1 x dustfree liquid