The MILWAUKEE 3" Mesh Sanding Discs are designed with POWERGRID Tear Resistant Mesh for maximum durability, delivering up to 12x longer life vs. standard sandpaper. These mesh sanding discs use an open weave design to minimize clogging and reduce material build-up for a smooth and flawless finish. The durable nylon backing increases protection against sharp edges, tight corners, and tough material removal applications while utilizing sharp aluminum oxide grain for faster finishing. The reusable mesh sanding discs are easy to clean for longer life; simply shake, vacuum, blow or rinse to clear away debris. High-quality hook and loop provides a secure connection and fast grit swaps. These sanding discs are available in 80 grit - 400 grit for use in wood, metal, and plastics.