Rosin is well suited for violin, and cello.Enables maximized projection and extra clear bow articulation Good quality, low dust, high viscosity is a little bit, make the instrument pronunciation sensitive, timbre Great grip and sound penetrating,Well suited for all kinds of steel and synthetic strings. Rosin with Good quality and low dust rosin protect human body against the harm Handmade soft rosin.Designed for violin, , cello Color: yellow Material: Dangerous Rosin Package Contents:2*rosin Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.