XIANQI Product Description: Quantity: 1pc Color: black Hand Grips Strengthener - This grip strengthener is ideal for improving strength, power and speed in the wrists, fingers and forearms muscles. Adjustable Resistance - Features an adjustable knob to change resistance level from 5 to 60kg (11-132lbs), improve your hand grips as you gradually increase load as required. Suitable for men and women of different strengths. Injury Rehabilitation - Daily exercise with this grip trainer is excellent for recovery of hand injury, muscle and ligament injury, rheumatoid arthritis, arthritis, carpal tunnel, tendovaginitis, fractured, broken wrist, and tendon surgery. Ergonomic Design - Ergonomic and soft handle of grip strengthener is comfortable to hold. The handles are rubberized and ridged for grip and shock absorption. High-quality stainless steel highly elastic spring, sturdy and durable. Suitable for Everyone - Best choice for rock climbers, tennis players, athletes and musicians to improve the flexibility of fingers and wrists. It is also suitable for people who want to exercise their hands, wrists and fingers.