Gripmaster VIA Hand Exercisers Reviewhttp://tinyurl.com/luck9cu Gripmaster VIA Hand Exercisers Medium hand and finger exerciser designed for musiciansChallenges each finger using spring-loaded piston technology4 buttons are designed to resemble the valves of a trumpetIdeal for improving dexterity, finger strength, and coordination6-pound-per-finger resistance; built for average-sized hands
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