Superior Materials - the Long Bar tool instrument is made from 316L medical grade stainless steel and polished to a mirror-like finish. Withstands the rigors of heavy use while remaining corrosion free. Physically Therapy Tools - Our uniquely designed Gua Sha tool removes scar tissue and adhesions under the skin that are preventing muscle movement and blood flow. Reduce recovery time and soreness while helping to heal soft tissue damage. It has a double beveled edge running completely around the tool. Especially suitable for back. Decrease Hand and Wrist Strain - Whether you are providing relief as a practicing professional or working over your own muscles, hands on therapy can wreak havoc on your hands and wrists. Our Skin Scraping Tool is comfortable to hold and maintaining presser without having to push harder. The beveled edges allow you to use the tool in both directions without having to change hand positions. Smooth Beveled Edges - Comfortable to hold and strong enough to maintain pressure. Use the tools in both directions without having to push hard or change hand positions. The tool helps you perform at your best by proving a solid grip and enough weight so you dont have to suffer from using your hands and thumbs on your clients. Note: The data are manual measurement, please allow a 1-3cm error, due to the differences between the light and the display, there will be a certain color difference, the specific received in kind prevail.