Nail buffers are essential manicure tools used to smooth, shine, and polish the surface of natural or artificial nails. They typically feature multiple sides with different levels of grit, allowing for various steps in the buffing process. The coarse side helps to smooth out ridges and imperfections, while finer sides polish the nails to a glossy finish. Buffers come in various shapes, such as rectangular blocks or flat, curved styles, making them versatile for different areas of the nail. They're ideal for prepping nails before applying polish or maintaining a natural, healthy-looking shine.