Specification • Air ejector type • Portable • Light weight (2.5kg) • Length : 1,450mm • Power ? Commpressed Air • Cleaning ? Welding slagmetalic dus t, grinding dust wet dust. ?Can cleaning dust and welding slag etc conveniently by connection of compressed air(6~7bar) for power. ?Can discharge waste easily by opening cover in the plastic bucket. - See more at: http://www.bestmadeinkorea.com/product-10392/Home-Garden/Handy-Cleaner.html#sthash.u5wyEB85.dpuf