D-SHAPED DESIGNThis handle is different from other products, it is D-shaped and the design is more ergonomic. By using this product, the fingers and the palm can be more closely adjusted to the pliers, and the five fingers can exert a more balanced force. 3 LEVELS TO MEET MULTIPLE NEEDSThis set of pliers contains 30 lbs. (light gray), 40lb (dark gray), 50lb (black) 3 different levels of grip ring. You can choose the right gripping circle according to your actual situation, or you can train from the smallest level. As your strength increases, you gradually increase the difficulty of the workout. SIZE FOR YOUIt is suitable for the elderly and patients with arthritis, carpal tunnel syndrome, tendonitis , to help you find your ideal state. It is also suitable for pianists, guitarists and other musicians, as well as office workers who often hit the keyboard. It helps relieve sore fingers and improve finger agility. At the same time, it is also a favorite of rock climbing, fitness, tennis, baseball and boxers, which can help them improve their finger strength. PORTABLE,DURABLE \u0026FLEXIBLEThe product is made of silicone, which can be cleaned with water, durable and safe, and due to its small size and weight, it can be taken with you to exercise at any time.