Bosch GSS 20 18 GSS 20 18A Orbital Sander Bosch Blue Line Weathered Driftwood Log. 46006712 PNG. Product Highlights If youre looking for an efficient sander thats designed for comfort, the Bosch GSS 20 18 Professional orbital sander is the tool for you. Thanks to its low vibration value limiting to 3. 0 m s2, you can work for longer periods without getting tired or your hand feeling numb. Whats more, the tools optimal balance makes sanding in all directions effortless, with one or both hands. Plus, this high comfort sander features an ergonomic, anti skid grip for effortless work. Equipment & Application The Bosch GSS 20 18 Professional orbital sander is ideal for cabinet installers and carpenters. You can use it for sanding large surfaces before painting, joint smoothing, and edge sanding.