What are the different grits of sandpaper available for sanding various surfaces?

The different grits of sandpaper available for sanding various surfaces range from coarse (lower grit numbers) to fine (higher grit numbers). Coarse grits, such as 40-60, are used for heavy sanding and removing material quickly. Medium grits, like 80-120, are good for general sanding and smoothing surfaces. Fine grits, such as 150-240, are used for finishing and polishing surfaces.