Bnineteenteam Violin Accessories, Bow Collimator Straightening Guide Tool Adjuster Corrector for Beginner Training (1/2 4/4 Violins)

PRACTICE GUIDE: Self bowing practice guide and it help you cultivate correct bowing and wrist action. APPLICATION: Very desirable term for violin beginners and violinists, playing great role in mastering correct bowing action and improving their playing skills. EASY TO INSTALL AND DISASSEMBLE: The closure design is easy to mount on or take it down. PORTABLE: Mini size and lightweight. The violin bow corrector is easy to carry and use. ASSURANCE: If you are not satisfied with our product you received, you can send emails to us at any time.We will reply you instantly and help you solve your problem.After-sales service guarantee, if our products have quality problems after receiving the goods, you can choose free return or full refund.