The new Norton Fine Grinding Sponge is the ideal range of paint finishes, especially after the fine grinding process. The innovative ¡°open mesh¡± sponge surface design absorbs moisture and perfectly conforms to the surface shape; it maintains stable cutting force, surface uniformity, and effectively reduces scratch depth during product use, giving the paint a more Perfect surface quality. In order to improve the efficiency of over-fine, it is recommended to use a two-way sander, but this product is also used for manual grinding.