Sanding sponges are versatile tools used for smoothing and finishing surfaces. They are made of a foam core covered with abrasive material, allowing them to conform to various shapes and contours. Sanding sponges come in different grits, which determine how coarse or fine the surface will be after sanding. These sponges are commonly used in woodworking, drywall finishing, and automotive applications. Unlike traditional sandpaper, sanding sponges can be rinsed and reused, making them a more durable option. They are effective for both rough sanding and final finishing, providing a smooth surface for painting or staining.