Features: Quality Material: The violin bow straightener is made of quality high grade ABS and metal material, durable and sturdy having long service timing, constructed of ABS, durable and exquisite workmanship. Lightweight and Portable: The convenient fixing strap of this violin bow straightener is easy to install and remove, small in size and light in weight, making it easy for you to put it in your performance bag. High Performance: It can help you develop correct bow posture and wrist movements when practicing with the bow, and force you to find a sense of equilibria and verticality in the running track of the bow straightener. Suitable For: The violin bow straightener is suitable for beginners to absorb the correct bowstring movements and violinists to improve their performance. With fine craftsmanship and flexible adjustment which is reliable to use. After Sales: If you have any questions about the violin bow straightener, or you encounter problems with your use, you can contact-us as soon as possible. We will provide you with a solution in good timing. Specifications: Material: Metal Color: As The Picture Shows Package Weight: approx.90g Size: approx.14.7x4.6x3.8cm/5.78x1.81x1.49in (More Size Detail, Please See Photo.) Note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color of the item. Thanks! Package includes: 1Pc x Violin Bow Straightening Corrector