Strong Grip Finger Orthosis Hand Exercise Piano Guitar Guzheng Finger Strength Adjustable Distance Finger Force Rehabilitation|Hand Grips Strong Grip Finger Orthosis Hand Exercise Piano guitar Guzheng Finger Strength Adjustable Distance Finger Force Rehabilitation Features: Material:carbon steel frame, galvanized spring steel spring, ABS new material frame, ABS new material ring, nylon rope traction rivet fixing Strength: 45 pounds Description: 1.The pronunciation is not correct when the finger strength of the guitar is insufficient, and it is easy to touch other strings. After using the finger power device, the finger power can be significantly improved. 3.When playing the piano, guzheng, etc., the finger power is not enough, you can use the finger power device to improve. 3.Guitar, piano, ancient instruments and rock climbing, martial arts, gymnastics, judo and other sports practice range 4.Really effective finger force trainer, improve finger strength, better grasp, and each finger directly gets effective exercise. 5.In combination with the stroke direction of the finger grasping, the thumb side obtains a certain movable space, effectively avoiding the tingling sensation caused by the circular pull ring excessively squeezing the side of the thumb.Size chart: Thumb spring wire diameter :2.0 Index finger spring wire diameter :1.5 Middle finger spring wire diameter :1.4 Ring finger spring wire diameter: 1.3 Small thumb spring wire diameter :1.2Package included: 1x Finger Grip StrengthenerNotes: 1. 1 inch = 2.54 cm 2.Please measure it yourself to choose the right size.3.Due to the difference between the different displays, the picture may not reflectthe actual color of the item. Thank you