Adjustable hand strengthener range: Strong and durable with a durable stainless steel spring and easy-to-adjust resistance range for long-term improvement. You can adjust the strength from 5-60 kg of tension by adjusting the black dial to your level. You can take it slow and then go hard on yourself, step by step, to increase your grip strength. Rehabilitation, recovery and stress relief: The grip strengthener is ideal for rehabilitation, recovery and stress relief. It can be used to build strength, promote blood circulation, increase flexibility and reduce stress. Ideal for increasing finger flexibility. It recruits and trains muscles in your forearm, wrist, hand and fingers. Special and ergonomic design: Ergonomic design ensures that the hand grippers are comfortable, smooth and enjoyable to use. The hand exerciser grip strengthener comes with powerful rubber grips for a strong hold. Soft-grip, eco-friendly handles and fully adjustable features make our hand exercisers suitable for both men and women.Easy to carry: Small, exquisite, lightweight, and portable, you can take your new strengthening companion anywhere and take it with you for training. Practical and portable handle for easy use in any environment by men, women, seniors, and teenagers. Especially suitable for the elderly, office workers, and sports enthusiasts.