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-edged edges to reduce pain in the head, feet, shoulders, neck, and muscles, specially designed for small and medium 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 was 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. Satisfactory 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.