Smaller than a mouse pad, this jewelry bench polisher has pre-lubricated ball bearings and a dust-proof motor housing that makes it virtually maintenance free. You don't sacrifice quality or speed with this well balanced precision polisher, which works with standard wheels and buffs up to 4". Includes 2 tapered spindles, 2 medium abrasive wheels and 2 replacement motor brushes. 110 volt, 1/6 HP motor. Variable speed from 1,800 - 7,500 Rpm UL Listed One year warranty.