Violin Pierre Guillaume Wooden Box Rosin This is a high-quality rosin made from 100% natural French resin, skillfully blended according to the unique recipe of the renowned Belgian bow maker "Pierre Guillaume." Particle Fineness/Smoothness: ★★★★★★☆ Viscosity/Grip Strength: ★★★★★★☆ Sound Purity/Low Noise: ★★★★★★☆ - Comes in a luxurious wooden box. - Produces a powerful and smooth tone. It's very easy to get a good volume. Unused, but there is a slight stain on the label of the case lid. Please check the photos. This rosin can be used not only for violin, but also for viola and cello.