This is the popular rosin for violin from Koshundo. It has been used a few times, so please understand. ―From Koshundo's website― It will make your violin sound its best and produce a warm tone. We believe it will bring out the best performance of each of your instruments. The grip is not a harsh, catching feel that puts a strain on the hand, but it provides a grip that should be satisfactory even for double bass players who have been using violin-type rosin.