Does the subject want to ask, "In general, it is more appropriate to use ribbed steel bars with beads or without beads?" Scroll bars with beads are universal. According to relevant data, beaded sticks can help athletes and fitness enthusiasts to accelerate muscle recovery and relaxation, relieve muscle soreness and stiffness, and improve exercise effect and efficiency. It is often used in yoga, pilates, dancing, running and other forms of exercise. A beadless rolling pin is suitable for beginners or people with sensitive muscles. You can choose a soft scroll bar. People with strong muscles can choose a hard rolling pin; People who need portability and versatility can choose to fold the scroll bar. Rolling pin can stimulate bladder meridian, expel toxin and eliminate dampness, improve symptoms of lumbar muscle strain and promote systemic blood circulation. Rolling pin is mainly used to massage and dredge people's meridians, and it is also a common massage method.