●Dimensions: 880 X 490 X 2340mm. ●Main material: steel pipe ●Installation method: direct buried ●How to use: Stand underneath, extend both arms straight up, hold the two handles with both hands respectively, the two arms are resistance to each other, and force each other at the same time, pulling vertically and up and down alternately. ●Main function: enhance upper limb flexibility and hand-brain coordination.