Norton 9 x 11 in. 60-Grit Prosand Sandpaper Sheets, 20-Pack features a premium abrasive that delivers superior cutting performance on all surfaces. These sandpaper sheets last significantly longer and cut faster than conventional abrasives, boasting a durability three times greater than Norton's previous 3X technology. The open abrasive grain is specially coated to resist clogging and loading during sanding, while heat treatment toughens the grain to maintain sharpness and withstand extreme pressure. This makes it one of the most durable abrasives available. The super sharp edges enable faster material removal, and the fiber-reinforced paper with latex saturation provides increased backing strength and flexibility, allowing easy folding without tearing. The non-pigmented, water-based stearate anti-clog (No-Fil) open coat design prevents premature loading and ensures no color transfer to the workpiece. I for sanding paint, drywall, and wood, this pack contains 20 sheets designed to enhance your sanding efficiency.