D-shaped Hand Exerciser Set,hand Grip Strengthener, Silicone Grip Strength Trainer For Senior This grip is different from other products, it is D-shaped, and the design is more ergonomic. Using this product, the fingers and palm can be more closely fitted to the gripper, and the five fingers can exert a more balanced force. You can choose the right grip circle according to your actual situation, or you can practice from the smallest level. As your strength increases, you will gradually increase the difficulty of training. it is suitable for the elderly and patients suffering from arthritis, carpal tunnel syndrome, tendinitis, to help you restore your ideal state. It is also suitable for pianists, guitarists and other musicians, as well as office workers who often hit thekeyboard. 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 the strength of their fingers. Color: dark gray + black Size: 10.5*7CM, thickness 2CM Quantity: 2 pieces Warm prompt: 1.As different measuring methods,it will occur 1-3 cm deviation about the items,please ensure that it is okay for you before ordering. 2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding 3. Only the above package contents, excluding other products.