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Ninjaline™ Ninja Gym Rings Obstacle
Builds forearm and upper body strength
TRAIN LIKE A NINJA! With the all NEW fun and challenging Ninja Gym Rings Hanging Obstacle by Ninjaline. Kit comes with a set of 2. Excellent for building forearm and upper body strength. Their size works great for a variety of hand sizes. Their ability to rotate makes them easier on your tendons and shoulders.