Need. Finger Force Guitar Bass Finger Strength Training Violin Trainer Guzheng Grip Fitness Equipment

Finger Strength Training EquipmentMaterial: Environment-friendly resin materialDimensions: Length 9 cm, height 7 cm.Product features:- High-quality workmanship ensures the flexibility of the buttons, and the precision is even and uniform.- Suitable for children.- Unique, fully enclosed, one-piece design, springs are not exposed, safer and more secure.- Regular practice can improve your musical skills.