The U-Sand uses one machine to do the work of three (a drum sander, edger, and buffer). Its attached wheels allow for easy maneuvering, as well as transporting. This four-pad sander utilizes a random orbit technology, enabling it to sand floors without difficulty or damage. Changing sandpaper on the U-Sand is easy and does not require any tools.  U-Sand technology means it is possible to sand across the grain. Unlike traditional sanders, there are no worries of gouges or damage to floors. Anyone can use the lightweight U-Sand. The machine is virtually dust free so there is very little clean up.