Planet Waves Gripmaster Hand Strengthener

The Gripmaster hand and finger exerciser is uniquely effective because each finger is isolated and flexed on an individual spring-loaded button. Gripmaster delivers total conditioning to each individual finger, the entire hand, wrist, and forearm. Beginners will leap months ahead in fingering strength and ability. Professionals can easily warm up before performances. It's pocket size and durable. Workout anytime, anywhere, even when your instrument is not available.