I got these sanding screens when I realized I was going thru tons of sandpaper on my most recent remodel project. Until now I had always used a 3M product for this but I got these when I couldn't get my normal brand of product. They come in a three pack one medium and two fine screens, which is one of my major gripes. I would much rather have single grades in the pack instead of an assortment of two grades. The screens perform very well, I have no problem with the quality. They cost a little more than the 3M counterpart, but only a few pennies. The screens are very long wearing and leave a great finish. They are the same standard size as the ones I normally use and fit my sanding board just like the originals. Although I don't normally use this brand of screen I would recommend them to others that needed such a product. I was satisfied with the product and will most likely use them again, assuming I don't find something better or less expensive by the time I need to purchase more .