Stainless Steel Material：Scraping knife is made of high quality premium stainless steel, it is the upgraded version of traditional scraping stone with smooth surface, durable and easy to clean. Wide Range of Application:Scraping tools can be used for face, neck, back, shoulder, arm, foot arm, which can improve tense muscles, dissolve blood stasis and remove dampness. Sturdy and Durable: stainless steel gua sha board is tougher than stone, jade, and buffalo horn tools. Easy Cleaning:Compared with