Ring Mesh Shader
Appending material in your blender project file.
1. After download, open your blender project and click "Files/Append" or press Shift+F1.
2. Navigate to the product .blend file that contains the materials and click on them.
3. Open the Material Folder and double-click on the material you want to append or press button "Append from Library".
You will now find the node group under the material menu.