Medical Grade: The stainless steel Gua Sha massage tools are made of high-quality medical grade stainless steel. Polished to a mirror-like finish, they are durable, reduce friction and provide sensitive support. Fascia Scraper: The Gua Sha tool uses the double-beveled edges to reduce pain in the head, feet, shoulders, neck and muscles, specially designed for small and medium-sized areas of the body. This scraping tool is used by chiropractors, physical therapists, occupational therapists, athletic trainers or massage therapists. FUNCTION: This soft tissue scraping massage tool has been developed to effectively treat adhesions and scarring caused by surgery, injury and overuse of muscles. It can increase blood flow, lymph and body fluids, improve overall body health, reduce stress and be full of vitality. Satisfying Product - This gua sha muscle scraping tool is versatile and easy to handle and carry. You will not be disappointed with the quality and performance of this tool.