Feature:1. The convenient fixing strap of this violin bow straightener is easy to install and remove.2. With this bow straightener, it can help you develop correct bow posture and wrist movements when practicing with the bow.3. This violin bow straightness corrector is small in size and light in weight, making it easy for you to put it in your performance bag.4. Suitable for beginners to master the correct bowstring movements and violinists to improve their performance.5. Using the bow straightener can force you to find a sense of equilibrium and verticality in the running track of the bow straightener. When practicing open strings, scales, etudes, and music, the bow will be very stable.Specification:Item Type: Bow StraightenerMaterial: ABS+MetalColour: BlackSuitable for 4/4 violin..Package List:1 x Violin Bow Straightener