The Cando VIA Hand Exerciser is ideal for improving dexterity, hand health, and strength. These unique hand exercisers are the only hand exercisers that challenge each finger individually for improved strength, speed, dexterity and overall hand health and wellness. VIA Hand Exerciser has a round, soft look, wider finger pistons for smoother function and improved finger performance, and is available in 5 tensions. The ability to control all starts with the hands. Your hand is really five separate systems which work in seamless unity. The only way to develop superior strength, endurance, and coordination in your hands is to challenge and develop each finger individually.