" D'Addario/Planet Waves Varigrip Designed with the musician in mind, the D'Addario Planet Waves Varigrip is an adjustable tension hand exerciser that helps improve dexterity and strength in your fingers, hands, and forearms Adjustable Finger TensionView larger Build Your CallusesView larger Tailored Tension The Varigrip allows the user the unique ability to adjust the tension for each finger. This makes strengthening individual fingers simple and prevents you from favoring certain fingers. Fitness For Your Fingers For most musicians the pre-show warm-up is an integral part of playing a great show. With the D'Addario/Planet Waves Varigrip players can get their fingers, hands, and forearms in peak form before they hit the stage. Comfortable to Use Just because you're working out doesn't mean you can't feel comfortable doing so. The overmolded finger pads and grip help make your conditioning comfortable. Toughen Your Tips By removing the reversible molded grip you can uncover a simulated string on the other side of the Varigrip that helps develop and maintain finger calluses. This lets you combine grip strength with the needs of string musicians. Condition All Of Your FingersView larger Muscle Memory The Varigrip's design is perfect for building strength, but it's also perfect for maintaining grip and dexterity when a musician is away from their instrument for any length of time. Whether you're a guitarist, drummer, or play any other instrument, you never want to lose the strength and coordination you've developed while practicing; and now you don't have to. Varigrip Features Helps strengthen fingers, hands, and forearmsVariable tension lets you customize the tension on each fingerReversible molded grip uncovers simulated strings to help develop and maintain finger calluses for string musiciansIdeal for pre-show warm-ups and maintaining strengthThe ultimate conditioning tool for all musicians "