Trim-Tex's 540 Pro Sander is the most efficient sander on the market. With its No flip design and 60% larger sanding surface, the tool allows you to sand wide seams and into corners without changing tools. This innovative product is manufactured in the USA and features a patented "hook and loop" system that is molded into the tool, securing the all in one foam and grit sanding pad. The quick change system (hook, loop, foam and grit) assures that you have no separate (and costly) foam pads that wear out.