A wet saw is a power tool used for cutting hard materials like tile, stone, and glass. It features a diamond blade that spins at high speeds and is cooled by a continuous stream of water. This water helps to reduce dust and keeps the blade from overheating, ensuring cleaner cuts and longer tool life. Wet saws are commonly used in construction and home improvement projects, especially for installing ceramic tiles or granite countertops. They come in various sizes, from portable models for small jobs to larger, stationary versions for professional use.