[Improvement of grip] finger exerciser can enhance the wrist, improve the flexibility of the , and increase the strength of both hands while reducing fatigue. Its tension value ranges from 30 to 50 pounds. Helps balance your grip muscles and expand your muscles. [Food -grade Silicone] finger exerciser The highest-performance high-quality design is made of rubber. It is a solid, durable, safe, and waterproof material, which is elastic and elastic, but strong and tear. It is washable and used frequently and comfortably. [Universal] finger extension exerciser is suitable for all ages, suitable for all sizes, different from other "small finger hole bands" in the market. Portable, and easy to put in bags or pockets. You can repeat practice in driving, office, or anywhere [Rehabilitation and Prevention] If you are injuring the wrist, hand, or tendon injury or surgery, then our finger stretcher is the rehabilitation tool you have been looking for. It is very suitable for rheumatoid arthritis, arthritis, wristlets, tendonitis, tennis elbow, and recovering from a wrist or , or when you type, send text messages, or any other activities using grip muscles [Flexible use] finger stretcher 6 resistance levels of 6 colors, whether you are a beginner or a senior exerciser, you can perfectly play your performance. Green, light blue is low resistance; blue, medium treasure blue; gray and orange are heavy. Different forces will provide more flexibility and choices for your finger training. Colour:As Shown Material:rubber Package Contents: 6 * finger exerciser Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.