Features:1. Used to release muscle tension and tightness2. Best choice for professional gua sha therapist or personal user3. Can perform gua sha for the most positions of the bodyDescription:Item type: Black scrape stoneColor: BlackMaterial: Stone needleSize: App 9.5 X 5.5 X 0.6cm (L X W X H)The hole diameter: App 1.5cmSuit: Full bodyIntended for:1. People who long time using computers、 mobile phones or other types of electromagnetic radiation equipment.2. Faster pace of work、 the nerve is in a state of tension for a long time.3. An adverse blood circulation; a person who is easily stiff or painful in the waist、 shoulders、 and neck.5. Mental stress、 the need to continue to relax the spirit of the people.6. Often insomnia、 listlessness、 need to improve physical energy of people.7. Low immunity、 people need to improve physical fitness.Package Included:1 X Black scrape stoneNotes:1. Please allow slight deviation for the measurement data and make sure you do not mind before ordering.2. The real color of the item may be slightly different from the pictures shown on website    caused by many factors such as brightness of your monitor and light brightness.