There is increasing awareness of the importance of dust extraction, so get the right accessories to minimize dust in your work environment. The Makita dust extracting nozzle (450079-5) is engineered for improved dust extraction when used with the Makita 8-1/4 In. circular saw (5008MG) and a vacuum dust extractor (saw and vacuum sold separately). It installs quickly and easily, and is designed with high quality materials for long service life.