Known as the Ring One Arm Biceps Curl, this is a curl variation using a set of gymnastic rings. A biceps isolation move that curls a set of gymnastic rings up and down through a controlled elbow hinge. It's commonly used to correct strength imbalances between the left and right side.
Log your ring one arm biceps curl sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.