Finger Exerciser and Hand StrengthenerThis hand grip strengthener is designed with 2 colors of bands with 2 different stretches: green (20 lbs) and blue (40 lbs), suitable for different stages of hand rehabilitation (primary, intermediate and advanced rehabilitation). It is used for hand injuries and wrist injuries, starting from the beginning to exercise until it returns to normal level.Rehabilitation and PreventionThis hand exerciser is a perfect gripper for people to relieve hand pain and stiffness. At the same time, exercising your fingers can improve finger mobility and increase blood flow to the affected area. It is a perfect gripper for rheumatoid arthritis, carpal tunnel syndrome, tendonitis, tennis elbow, and those who are recovering from wrist fractures or breaks or tendon surgery.Ergonomic DesignThis guitar finger exerciser is made of high elastic silicone, the alloy fixing frame and tape adjuster can expand the range of motion when exercising, regardless of the circumference of the wrist. Grip the fitness machine to strengthen the strength of your fingers, forearms and wrists. It can also isolate and train the flexibility and endurance of each finger separately.Portable and LightweightThis hand gripper and forearm strengthener is small enough to fit in your gym bag or pocket, and can be easily used by anyone anywhere. You can enjoy the exercise while working or relaxing. Use the finger extensor exerciser to exercise your hands anytime, anywhere. They are great gifts for rock climbers, tennis players, guitarists, pianists, drummers, and musicians.