Feature:1. This violin bow straightener adopts imported silicone gripping feet, which is environmentally friendly and wear-resistant, and does not damage the paint surface of the violin2. According to the three-dimensional fit design of the edge of the violin, the size is standard, firmly grasp, fit the body, the overall line is smooth, refer to the mellow beauty of the violin, possess good coordination, full beauty, and the elastic design can effectively correct the movement posture3. This violin bow straightness corrector is suitable for 4/4, 4/3, 1/2 violins. Plays an important role in correcting and improving violin playing skills4. Self bowing practice guide and help you cultivate correct bowing and wrist action. Encourages straight bowing, the best helper for beginners. Great confidence builder for the student violinist or for the seasoned player who wants to improve their bowing action5. Using thermoplastic elastomer material, possess high strength and elasticity, light and convenient, easy to carry and use. Easy to store in any violin caseSpecification:Item Type: Violin Bow CollimatorMaterial: Environmentally friendly ABS + siliconeApplicable Violin Specifications: 4/4, 4/3, 1/2.Package List:1 x Violin Bow Collimator