Item Type: Wrist Resistance Bar Material: ABS Plastics Suitable for People: Wrist injury, people with hand function problems, rehabilitation training, middle aged and elderly fitness exercise. (For adults and children over 7 years old) Strength of the Product: The strength can be adjusted. Training requires a certain sports basis of wrist strength, use in late period of rehabilitation. Product Size: (Approx.) 26 x 10cm / 10.2 x 3.9in (manual measurement with 1 to 2cm error) Package List 1 x Wrist Exerciser Bars 1 x Manual 1 x Rubber Band 1Elastic Rubber Band: With good elasticity, convenience for gradual training, can adjust the strength to suit yourself. And rubber band is long lasting, will not easily break up. 2Adjusted Strength: Can be adjusted by the number of rubber band hanging on T hook, can be adjusted at will, simple and convenient operation, to meet the needs of different people to exercise. 3Hand Training: Exercises the wrist and forearm muscles, for wrist and arm strength training, and for wrist pronation and supination exercises 4Comfortable Grip: Handle area is used foam material, which is soft, skin friendly, comfortable, and will not scratch or damage the hand skin. Also is flexible for providing an easy grip during exercises. 5Suitable People: People with wrist injury, hand function problems, need rehabilitation training, suitable for middle aged and elderly fitness exercise.