Reusable and washable, they last longer than sandpaper.Uses include wood, drywall, metal, auto body sanding Great for sanding odd shapes, edges and grooves. Single Angle Sanding Sponge (Coarse Grit) (36 Sponges), 36PK Sand and shape contours with flexible foam sanding pads that conform to almost any surface.
It is best for metals (particularly harder metals) and is the only grain that can be used on glass, stone and marble. Silicon Carbide sandpaper is sharper and more friable, therefore it is still a long-lasting product and is ideal for uses on harder materials, rougher surfaces, and for polishing, due to its hardness and sharpness..