Norton Premium 5X Sanding Contour Sponges sand five times (5X) faster than sandpaper, thanks to new technology. This thin, wide sponge will handle contours, spindles, curves and the roughest sanding jobs. With new anti-clogging technology you can sand in either wet or dry applications. From metal and wood to fine wet-sanded finishes, these sponges can tackle almost any job. The exterior of the sponge is resistant to tearing, and the whole sponge life is extended by just rinsing in water, drying and reusing.