Fine grit is a term used to describe a type of SAND that is very fine and has a small grain size. It is often used in sandblasting, as it can be used to remove paint and rust from surfaces without damaging the underlying material. It is also used in construction, as it can be used to fill in small cracks and crevices in concrete and other materials. Fine grit SAND is also used in landscaping, as it can be used to create a smooth surface for pathways and other outdoor areas.