... a grade LED Item No.:868N Product naem:Wrist ball with LED Description:Sheel material: A GRADE PCRoller ... like golf,tennis,squash,cricket,baseball,bowling,basket ball,motocross,mountain climbing.-Increase strength in fingers, wrists ... and joints.GENERAL PRECAUTIONS:-Do not drop the ball on hard surface at any time , the ... 12 are supervised by an adult.-Keep the inner parts of the abll clean and avoid any ...