This premium sandpaper lasts longer and works better than other types. The technical reason is that is has "a friable aluminum oxide abrasive that easily fractures to expose fresh cutting edges". What that means in practical terms is that it holds its ability to remove product longer. Cutting each 9" x 11" sheet into smaller pieces makes working on small projects easy. This sandpaper excels at smoothing finishes between coats as well as surface preparation.