Aston Villa Resin for Violin Viola Cello Bowed String Instrument Accessories Description: Material: Rosin and Plastic Case Colour:Red,Ligaht Yellow Size:6cm x 4cm x 2.4cm Net Weight :41g Features: -Saves the strings and bow hair. -Takes hold well and leaves very little dust. -Applied to bow hair to increase friction. -Grip the hair and make them speak, or vibrate clearly, better performance. -Doesn't soften in warm weather. -Suitable for bowed instruments such as violin, viola and cello. -Please allow 1-3cm error due to manual measurement Pls make sure you do not mind before you bid. Package Included: 1 x Rosin Rosin is non volatile natural resin obtained by different processing methods,and the pine rosin as raw material. Rosin is pulled stringed instrument of the main parts of, in the bow with rosin to voice out, this is the string based.