Grinding discs are tools used in various applications to grind, cut, or polish materials like metal, wood, and concrete. They are typically made from abrasive materials, such as aluminum oxide or silicon carbide, and come in different sizes and thicknesses to suit specific tasks. These discs are attached to power tools, such as angle grinders or bench grinders, allowing users to achieve smooth surfaces or precise cuts. The choice of grinding disc depends on the material being worked on and the desired finish. For instance, diamond grinding discs are ideal for hard materials like concrete, while flap discs are better for blending and finishing metal surfaces. Proper selection and usage of grinding discs enhance efficiency and safety in various projects.