Revolutions per minute (RPM) determine the speed. High RPMs provide fast material removal, while low RPMs offer precision in sharpening.

Select the disc size. A larger diameter covers larger surfaces and wears out more slowly.

Shows the belt speed (m/s). High speeds remove material quickly, while low speeds provide precision on delicate materials.

The length and width of the sandpaper (belt) that the wheel accepts for sanding tasks.