If you are looking for a 7 inch graduated grinding wheel, you may be looking for a wheel designed to perform a specific task such as sanding surfaces or sanding. Here is a general description of this type of cylinder:

Material: These cylinders are usually made of high-quality materials such as steel or aluminum, which gives them durability and sustainability.
Diameter and Height: The diameter of the cylinder is 7 inches, and the height can be variable depending on the model. The cylinder can be graduated allowing the user to adjust the height according to the needs of the job.
Usage: These rollers are commonly used in industry and professional work for purposes such as grinding metal or wood surfaces, refining surfaces, and sanding.
Grades: They come with grades with information about the size of the grains or grains, and this helps to organize the work and ensure proper performance.
Handle: Some cylinders may have a handle that helps in ease of use and control while working.
Safety: Appropriate safety precautions should always be taken when using these cylinders, including wearing personal protective equipment such as goggles and gloves.
Cylinder types vary with the specific application and can be used in a wide variety of industries and applications. You should always choose the roller that best suits your project needs.