There are three grades of Mr. Surfacer - 500, 1000 and 1200. Like sandpaper/emery cloth, the lower the number, the coarser the granules. Mr. Surfacer can be used straight from the bottle using a spotter paintbrush, cotton swab (que tip) or toothpick for filling in bumps, scratches and pits. If the hole is large, use several layers, keeping each application thin so it dries thoroughly. Mr. Surfacer is also great for filling in seams. Once it has dried, you can remove any excess with a swab dipped in rubbing alcohol (IPA). The alcohol will soften Mr. Surfacer and rubbing it will remove the excess or it can be easily sanded. 40ml.