Description: USES: Violin Bow Grip, can positioning the finger tip, and the finger can remain curved and flexible, helps you hold the violin bow correctly. VIOLIN BOW POSTURE CORRECTOR: The Violin Bow Holder ensures finger placement is accurate, helping you place your thumb, index and pinky fingers correctly. Make sure the fingers still contact bow at all the customary places, positioning and supporting all fingers of the right hand. UNIVERSAL: Violin Bow Holder Helper is universal, and great for children and adults hand sizes. DURABLE MATERIAL: Violin Bow Hold Holder is made of high quality rubber material, soft, wear resistant, easy to hold, can be used for a long time. APPLICATION: Viola Bow Teaching Aid is suitable for beginners, professionals, great for learning and playing. Specification: Material: Rubber Size Chart: 10.6cmx6cmx3.5cm/4.17inchx6inchx1.38inch Package Includes: 1 Violin Bow Grip Note: Please allow slightly errors due to manual measurement and different monitors.