The Original Spring-Loaded Hand and Finger Exerciser: A favorite among professional athletes, world-class musicians, and rehabilitation professionals. Made of high-quality ABS plastic, stainless steel springs, and certified rubber.Power, Power, and Endurance for Athletes: Exercise each finger individually or the entire hand. Train each finger individually to improve strength, flexibility, and endurance. Build superior hand, wrist, and forearm strength.Rehabilitation and Prevention (Stronger, Healthier Hands): Ideal for anyone looking to develop and maintain strong, healthy hands. Helps alleviate arthritis, carpal tunnel syndrome, neuropathy, and poor circulation.Hand Exerciser (second image): The VIA is our entry-level model, the GRIPMASTER is our signature model, the GRIPMASTER-Rehab adds a palm rest, and the PRO is our most advanced model, designed for professionals and motivated individuals.Multiple Tension Levels: Progressive tension levels help users measure their progress. VIA is available from 1 lb to 6 lb, GRIPMASTER is available from 1 lb to 9 lb, GRIPMASTER-Rehab is available from 0.75 lb to 9 lb, and PRO is available from 5 lb to 13 lb. By isolating each finger, stronger fingers cannot compensate for weaker ones.Package Contains: One 1.5 lb Light Tension Hand Exerciser