Variable Speed:750W high power motor sander has 6-level variable speed: Min /1/2/3/4/5/ Max, can be adjusted from 800-1700RPM. The sanding effect can be optimized and adjusted according to your needs. Excellent Design: Our wall sander is equipped with a aluminum alloy extension rod, the handle can be extended to 5.5ft. And the dual hook tension spring can fix the head of the sander, Ideal for grinding drywall, ceilings, interior walls, exterior walls, paint coatings and loose plaster. Vacuum Suction System: Combined with a 6.5ft dust hose and a dust bag, vacuum suction system eligible for 90% dust absorption. the perfect dust collection effect prevents you from inhaling a lot of dust at work, and create a healthy working environment for you. Optional LED Light:double-deck LED strip lights make this drywall sander is also suitable for dark workplace. The light is soft and not dazzling, and it will not hurt your eyes even if you work for a long time