Innovative Dust Collection Mechanism: Combining high-speed fan blades, an expertly engineered straight-through dust collection duct, and an adjustable suction control knob, this drywall sander achieves an impressive 99.9% dust collection efficiency, ensuring a clean and secure working environment. High-Efficiency 7-Amp Motor & NSK Bearings: This drywall sander is driven by a 7-amp pure copper motor, certified by ETL for assured safety. Enhanced with low-vibration NSK Japanese bearings, it promises a longer operational life and produces a smoother, more precise sanding finish. Specialized Fixture & Flexible Head: With a specialized fixture that maintains a vertical angle, this drywall sander is perfect for sanding ceilings. Its 8-inch floating head rotates 360 degrees to easily conform to corners, edges, and walls, and the detachable chassis edge ensures effective sanding in tight spaces. Extendable Rod & LED Lighting: Equipped with an aluminum extension rod, this wall sander can be extended from 4.9ft to 6.2ft, making it ideal for accessing higher surfaces.