... except the promoted one- Yuankang Non-Dust Multifunctional Wall Sander occupied more human design like conveniently turning on/off the ... : 180mmDust Absorption Rate: 98%Main Shaft: M8 Instrument Components: Sander, Suction Machine, Dust Sucking Conduit, Dust Collecting Sleeve, Braces, ... Weight In The Tabulation Above Is Only The Weight Of Sander And Suction Machine, Excluding The Whole Instrument. The ...