Size: 9*8*2.5cm Color: black, blue Material: ABS Package content: 2 x gripper 1. Main function: Our finger strengtheners are designed to develop and maintain the strength and dexterity of your fingers, hands, and forearms. 2. Ergonomic design: These hand exercisers feature an ergonomic palm grip, providing customized conditioning for individual fingers, the entire hand, wrist, and forearm. Secure and comfortable to use. 3. Fine workmanship: Our finger strengtheners are made of quality plastic and springs, durable enough for exercising each individual finger as well as the entire hand. Suitable for athletes, guitarists, pianists, accordion players, violinists, and individuals in hand rehabilitation. 4. High-quality finger trainer with a solid structure. Features a high-quality spring and new ABS plastic construction. Comfortable to hold and easy to use, designed to protect your fingers, durable, and built to last longer than standard finger trainers used in occupational therapy. 5. Extremely portable design. Easy to carry in luggage, bags, or purses. The slim size fits comfortably in the palm of your hand, allowing you to exercise your fingers anytime, anywhere.