An ultra-fine polishing wheel is a highly specialized abrasive tool designed for surfaces that require a mirror-like polish. It's usually used for very small items like jewelry that require brushing to give it a sparkle which is achieved by ultra-fine polishing wheels that use very high hairbrushes with extraordinarily high grit of often over 20,000 to 30,000. Used in the luxury watch industry, ultra-fine polishing wheels can wash satin and brush metals parts of the watches into breathtaking mirror bling. In the semiconductor industry, it can polish silicon wafers utilized in chips. Ultra-fine polishing wheels are very important for semi-finished and polished items of jewelry, where as ultra-fine polishing wheels are one of the best in achieving almost complete surface defect eliminations; holes, scratches, pits and numerous other marks almost invisible to the naked eye.