The Bosch ROS20VS is designed to give even the most exacting finish carpenters, cabinet makers, woodworkers and others exactly what they want, beginning with great performance and results. The optimized combination of pad orbit and rotation delivers fast removal and a well-blended, ultra-smooth finish. Bosch's integral pad dampening system, a pad braking system, is designed to eliminate the most common complaint of random orbit sander users; swirl marks on the workpiece. Finish quality is further enhanced with the use of a soft microcellular backing pad. The pliable pad ensures a smooth, fine finish on flat or contoured surfaces.