Main Features: -Made of high quality material, durable to use. -Low air consumption, low noise and long service life. -Comfortable ergonomic design, suitable for hand-held homework. -Suitable for hardware, furniture, plastics, paint grinding polishing products. -Eccentric head: machine polishing will work in an elliptical motion around the machine head. Press down during work will not make it stop immediately but make machine shock. So it is especially suitable for grinding.