Grit size refers to the size of the particles of abrading materials that are embedded in the these sanding paper rolls. This is generally measured using numbers, ranging from low numbers such as 40 to high numbers like 240.
The lower numbers are referred to as "coarse", and are used to achieve quick but rough results. The higher numbers are "fine", and are used for delicate materials and finishing.
If you have a question about sand paper rolls please feel free to contact us. We have expert staff members who will be happy to guide you through our products and answer your questions.