Feature: 1. This Bench Polisher has pre-lubricated ball bearings and a dust-proof motor housing that makes it virtually maintenance free. 2. Quality or speed with this well balanced precision polisher, works with standard wheels and buff pads up to 4 inches. 3. Variable speed to 10,000 rpm 4. Light weight and small size, easy to use and carry. 5. The Jewelry Buffer is designed to burnish and polish jewelry metals, stone, glass . 6. Pure copper motor, load up to 2000W 7. Fixed speed adjustment, LCD screen