304 Material: This Guasha instrument is made of high quality 304 stainless steel with smooth surface and edges, which is anti-allergic, antibacterial and easy to clean. The Guasha tool is friendly with sensitive skin. The arch of the Guasha instrument is more suitable for the palm of the hand, and there are a handgrip on the design, which makes the instrument not slip easily during use. Wide Application: This is a great massager tool. Often used by physiotherapists such as chiropractors, physiotherapists, occupational therapists or masseurs. Use professional massage therapists at home or in the office. Portable: It is very light and has a small black bag for storing and transporting. Scraping the massager, scraping the fascia and loosening the muscles, facial, neck, arms, legs, calves, and plantar fascia. It is suitable for the whole hand grip method, and it is firm and suitable for the back and large area massage of The thigh.