Develops and maintains the strength and dexterity of your fingers, hands and forearms;Variable tension provides customized conditioning for individual fingers;Reversible molded grip uncovers simulated strings to help develop and maintain finger calluses for;Perfect tool for pre-show warm-ups and maintaining conditioning when away from your instrument;The ultimate conditioning tool for all musicians

• Planet Waves Varigrip Adjustable Hand Exerciser

Planet Waves Varigrip Adjustable Hand ExerciserD'Addario &Co. Inc