Big wheels. The use of fitness equipment in the park is to hold the handle of the rotating wheel with both hands and rotate it clockwise or counterclockwise at the same time to exercise thinking ability and flexibility of hands and feet. The name is Big Wheel, which is used to enhance the strength and elasticity of shoulder strap muscles, improve the flexibility and flexibility of shoulder joint, and prevent and treat shoulder diseases. It is suitable for shoulder joint stiffness and mobility disorder (such as scapulohumeral periarthritis and scapulohumeral periarthritis), and is beneficial to the rehabilitation of shoulder trauma.