The Makita 7" Dust Extraction Surface Grinding Shroud (1911K1-3) is for use with Makita 7" and 9" grinders. The Grinding Shroud features a slidable front cap for flush-to-wall grinding and soft brushes prevent dust from escaping and help move the tool over the surface. It also features a 4-spring suspension system keeps shroud flush with surface during movement, and a removable edge piece allows surface work flush to other objects. It has a standard hose fitting will work with most vacuum systems (OD 1-7/16"), and is Ideal for concrete finishing, concrete material removal and paint or surface coating removal.