Black & Decker 4008 is a sander that can be used for a variety of sanding tasks. It is double insulated for added safety and can be used with both 2-wire and 3-wire extension cords. The sander has a powerful motor that delivers up to 4008 strokes per minute, making it ideal for both light and heavy-duty sanding projects. The sander also features a variable speed control that allows you to adjust the speed of the sander to match the task at hand. Additionally, the sander comes with a dust bag that helps to collect dust and debris while you are sanding.