This Gua Sha Scraping Massage Tool are made of grade stainless steel. IASTM tool polished to a mirror- like surface, this massage tools are durable and reduce friction for sensitive support. RELIEVE PAIN: gua sha stainless steel use the double-beveled edges to relief for muscle pain soreness after exercise out, accelerate blood circulation,Release lactic acid accumulation and fascial adhesion caused by muscle tension,faster recovery times. Physical therapy scraping tool: muscle scraper tools are designed to help effectively treat adhesion and scars caused by surgery, injury and overuse of muscles.Break up scar tissue. This gua sha massage tool Perfect for athletes, trainers and clinicians chiropractor, ccupational Therapist to treat tight muscles and chronic pain. Umanized design:fascia blaster tool is suitable for human palm curve, easy to hold and use with a super smooth touch, will not hurt your skin. It is designed for use on smaller to medium sized areas of the body such as the back, forearms, foot,neck, calves, and pectoral muscles. This soft tissue mobilization tools in particular has the most variety of application. This scraping massage tool set with a black or brown felt protective bag for easy storage and carrying.