Double position expander
The external dimensions (Length and width and high):1200*1500*1000mm Main function: Exercises spot and so on lumbodorsal region andshoulder week, to disease and so on lumbodorsal region strain,bursitis in shoulder has the preventing and controlling function.Exercise method: Both hands grasp or under hold do expand and contractthe movement.Matters needing attention: 1st, on in front of the instrument mustfirst get hold of a hand.2nd, to after movement when cannot let go, after in order toavoid creates supinely falls the instrument.3rd, when child exercise must have the adult to nurse.