This product is available in 4 grits and one tri-grit. Not knowing what to expect, I ordered one to try, fine grit. I was more than satisfied with the quality and the ease of contouring the stick to fit the work. I use this type of abrasives to remove very small amounts of balsa wood to final fit with minimum to no gaps. For example; Check this site, item DUM404 to see pictures of my assembled Dumas Super Marine Marine model plane. This performed exceedingly well. The pro's for this item is convenience, no reloading sandpaper blocks. And durability, with proper cleaning, they can last a long time. Really no Con's to report. It is just a great little sanding device. I will be ordering several of each grits.