❥ All-Natural resin：8 Pack high quality rosin is made of natural materials and reduces dust to a minimum to protect the human body from harm. ❥Great grip & mellow tones: Rosin are poured and packaged under the most stringent Produce Procedure, make your Acoustic instrument in great grip and mellow tones. ❥Wide compatibility: Wide compatible with  Any Stringed Instruments, design for violin, viola, cello and other stringed instruments. Suitable for all kinds of horsehair, synthetic hair bow string instruments. ❥Convenient to use: The plastic pack provides an easy grip for one-handed use and is packaged to fit nicely into instrument cases. The protective case to prevent breakage, extending the life of rosin. ❥Quick response service and Support: We are strving to improve our customer service, if you have any question about our product,please feel free contact us we will reply you within 12 hours. Package list: 8*pcs Rosin