Usage: Put this rosin spread evenly on the violin bow、 to have a white powdery uniformly attached to the bow rosin can begin performances Features: 1. friction large - can enhance subtle volume; 2. Strong adhesion - improves the sensitivity of the violin; 3. less dust --- reduce the harmful effects; 4.The strong adhesion --- once wipe rosin longer time than the average more than 2 times; 5. Mass --- long single block rosin time; 6. Universal good --- suitable for large、 medium and violin、 erhu and so on all kinds of stringed instruments. Such a good product、 will be able to bring your playing even better results. Dimensions: 2.01 in x 1.14 in x 0.47 in (5.1 cm x 2.9 cm x 1.2 cm) Weight: 0.92 oz (26 g)