Equipment description MobiGym Mobilisation Trainer The rotation discs always allow an accurate performance of the well-known arm circlingexercise, even in cases of limited shoulder mobility. Instruction for use MobiGym Mobilisation Trainer Stand front on or side on at almost arms length from the discs corresponding to shoulder height and use one hand to turn the discs clockwise or counterclockwise. Change the direction of rotation, the arm and the position after a period of time.