1. dust-free drywall sander 2. CE patent sander 3. labour saving ... 5.rub Inner corn Detailed Product Description1.Environmental friendly sander2.dust-absorption rate up to 98%3.top-quality with reasonable ... Rate: 98%Main Shaft: M8Instrument Components: Sander, Suction Machine, Dust Sucking Conduit, Dust Collecting Sleeve, Braces, Tube, Trigeminal Tool, and Tool Case. Title ...