Adjustable Grips First ever adjustable tension insert Great for exercise, sport fitness and therapy Builds hand, finger, wrist and arm strength Release stress, lower blood pressure Recommended by doctors and therapists Adjustable from 10 lbs to 100 lbs Lightweight durable high tech polymer Sold as a Pair Instructions: Spread handle apart slightly Slip adjustable insert into half moon shaped opening Slide insert In or Out to adjust tension.
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