Features: Powerful Motor --- High speed motor support speed from 4500rpm to 9000rpm, which can help you handle most jewelry rock creative work. Versatile Chuck --- 0.6-6mm chuck can fit most of cutting bists, drilling bits, brushes, etc(not include). So that the machine can do cutting, carving, drilling, grinding, polishing, milling, grind-milling, grinding, brushing, cleaning, derusting, etc. 7-Level Speed Adjustable --- Come with 7-gear speed adjustable power adapter, easy control, effective work. Wide Application --- Can be used to polishing jewelry, jade, stone carving, wood carving, gold, denture, handicraft carving, etc. Premium Quality --- All metal construct shell, solid, durable and wear-resisit, have a long service time. Specification: Plug: EU/US/AU/UK (optional) Power: 90W Voltage: DC 24V Speed: 4500-9000 RPM Adjustabtable Speed: 7-level adjustable Sandpaper Size: 75mm (3inch self selling sucker) Motor Mode: 775 Chuck: B10 chuck, 0.6-6mm Item Size: 170 * 110 * 80mm Packing List: 1 * Desktop Polisher 1 * Chuck Wrench 20 * 3in Sandpaper 1 * Power Adapter