The 3M ProPak 100 Grit (25-Pack) Drywall Sanding Screens are essential tools for sanding and grinding drywall compound and plaster. With a diameter of 4 inches and a length of 11-1/4 inches, these black sanding screens are suitable for various sanding applications. The 100 grit sanding grade ensures a smooth finish, while the package quantity of 25 provides ample supply for your projects. Made by the trusted brand 3M, these screens are designed for efficient and precise sanding in home improvement and workshop settings.