Features 1、Finger Strength Training: Finger strength trainer with large stroke, deep exercise related muscles, which is suitable for exercise finger strength, opposite finger and other functions. 2、Wide Application: Hand grip strength trainer can be used for hand injury, hand function problems, hand function rehabilitation training, middle aged and elderly fitness exercise. 3、Strength Adjust: Increasing or decreasing the number of rubber bands can adjust the strength, Grip strength trainer can be used in the middle and later stages of rehabilitation. 4、Easy to Use: Hand grip strengthener force can be adjusted by pressing the buckle and opening the front cover to adjust the number of rubber bands, which is convenient for you to use. 5、Excellent Plastic Rubber Band: Finger grip exerciser strength trainer made of plastic and rubber bands materials, firm and sturdy, which is ideal for strengthening finger and grip functions. Specification Item Type: Hand Finger Strengthener for Grip Material: Plastic Strength: Adjust by changing the number of rubber bands, suitable for mid to late stage rehabilitation Application: For hand injuries, adult and children (6 years and older) rehabilitation training, elderly fitness exercises. Package List 1 x Hand Grip Strengthener 1 x Instruction Manual 8 x Elastic Bands