It is unique in that it accomplishes a specific grit size polish without any error on the surface finish. Every piece of sandpaper in a roll is fabricated identically which fosters uniformity when the mechanical sanders are used. Paint and varnish finishes are very sensitive to changes for detailed finishing alterations so observing compliance with the parameters during their production processes is very critical. This type of sandpaper with smooth finish is used for fining sanding of small details of furniture where beautifully crafted furniture is the final outcome.