The Makita® cuff joint Adapter is engineered to fit onto the Hose to connect 38mm to 22mm cuff. The cuff screws on quickly and easily for added user convenience. Each cuff is manufactured of high quality materials for added durability and long life. For use with the Makita® 18V LXT Brushless 2 gallon HEPA filter portable wet/dry dust extractor vacuum (Xcv11, sold separately).