Shurhold Worlds Best Dual Action Polisher The design goal of Shurholds Dual Action Polisher was to allow users to achieve the same high gloss, professional finish that the pros do with a rotary bufferpolisher, but in a unit that less-experienced, everyday users can operate with the same effectiveness. Traditional rotary polishers have a larger wheel spinning at a high rpm, which means the operators technique is important as to avoid burns and swirls. The Shurhold polishers dual action, 6 inch os