There is increasing awareness of dust extraction, so get the right Adapter for your Makita Dust Extraction System. The Hose Cuff Adapter, 1-3/4”, is for use with Makita Anti-Static Hose (P-84084 sold separately) and the Quick-Click Cuff (W107417866, sold separately). It allows for quick accessory changes when using the Makita 11 Gallon Wet/Dry HEPA Filter Dust Extractor/Vacuum (VC4210, sold separately). The Cuff threads quickly and is built with high-quality materials for longer service life.