Bosch 3725DVS 5-Inch Random Orbit Variable Speed Dustless Sander/Polisher Powerful 3.3-Amps, 4,500-12,000 OPM ensures fast, smooth results on all surfaces Multi-purpose tool featuring eccentric orbit plus rotation Variable speed dial Sets optimal operating speeds for workpiece and sanding task Constant ResponseTM Circuitry - - Maintains constant speed under load - Overload protection Integral pad dampening system prevents swirl marks providing consistent finish