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Quantity
1
Description
Duonamic is proud to release Duonamic Torus, 3 Pack Hand Strength and Grip strength Trainer offering resistance from 40 lbs to 80 lbs. Torus's unique design generates 2 different types of resistance based on the which direction you place...
Reviews
3.9
8 ratings
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Very good quality! I use them everyday and can verify they help me in every aspect of my workouts.
K
Kyle · May 5, 2026
Great gadgets for Adhd-person
S
Sampsa · February 7, 2026
These things are awesome! I know many brands make them, but these with grippy texture are great. The resistance labels aren't too accurate when comparing across colors, but that's not too big a deal.
