With the addition of rings, Duonamic has established itself as the leader in quality doorway calisthenics training equipment.

Duonamic Ultimate Rings Travel Package: https://cutt.ly/gO1oIM4
use promo code "Grindstyle" for 10% off at check out

Other Duonamic products:

Elviia Pullup handles: https://cutt.ly/rO1oXjT

Powerholds grip trainer: https://cutt.ly/iO1oV9E

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