Photo 1 of ***It is used, it is not known if it is missing parts, therefore it is not known if it works 100%.****JIN BD Wrist Trainer Ball Auto-Start Wrist Strengthener Gyroscopic Forearm Exerciser Gyro Ball for Strengthen Arms, Fingers, Wrist Bones and Muscles with

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Photo 1 of ***It is used, it is not known if it is missing parts, therefore it is not known if it works 100%.****JIN BD Wrist Trainer Ball Auto-Start Wrist Strengthener Gyroscopic Forearm Exerciser Gyro Ball for Strengthen Arms, Fingers, Wrist Bones and Muscles with