RUPES Random Orbital Palm Pneumatic Sander w/150mm Pad 3mm Orbit-Skorpio III (Central Vac) [RH353A]Random Orbital Palm Pneumatic Sander with 150mm Pad & 3mm Orbit Skorpio III (Central Vac) The Random orbital palm pneumatic sander with 125mm pad, Skorpio III, is what every random orbital sander operator needs, an extremely quiet tool that has tremendous power and low vibration. The newly designed pneumatic Skorpio III is the quietest random orbital sander in its class. Further, it comes in a choice of orbit sizes to fit your particular application.