3M Pro Grade Precision Faster Sanding Sanding Block Sponge is ideal for sanding painted surfaces and resists loading which allows for larger sanding coverage. The sponge lasts longer than conventional sandpaper to last from start to finish of sanding projects.|NO-SLIP GRIP backing and durable materials help reduce hand fatigue|Premium mineral grits are made with technology found in Cubitron II Industrial Abrasives|Suitable for wet sanding and dry sanding|Sandpaper color will not discolor the surface you are sanding|Conforms to your surface for easier sanding