Is a complete, convenient hand, thumb & finger exerciser. A grip strengthener that properly addresses the kinetic chain of grip. A powerful & easy-to-use exercise therapy & rehabilitation device. A key ergonomic & lymph drainage exercise. Suitable for use with left or right hand, for training of fingers, hands, arm joints and forearm musculature, strengthens flexor and extensor muscles, joints as well as the carpal tunnel. Handmaster Plus allows health care professionals, trainers, athletes, musicians and other users to control the resistance of Handmaster Plus hand exercise device used. Each strength (soft, medium, firm) is designed for specific requirements. Strong or weak, old or young, no matter what your activity is, we have the right hand exercise solution for you.