The for violin is practical, and has excellent texture, can help you maintain your instrument increase the frictions between the bowstrings to play full and clear tone. Small size, easy to carry and easy to store, the violin can be an excellent choice for your musical instrument maintenance. Features -Color:Assorted Color -Material:Resin -Size:5.70X3.70X2.60cm/2.24X1.45X1.02in -This violin is a considerate for friends and family members who are learning the violin and need to maintain their instrument. -The instrument is compatible with most types of horsehair and synthetic hair bowed string instruments. -With a wide range of applications, this for violin is practical and portable for daily violin maintenance. -Practical instrument effectively increases the friction between the bowstring and the string. -Erhu enhances the clarity and brightness of the violin's sound, providing a better performance experience. Package list: 4 x violin rosins