The Makita HEPA Filter Set (199557-7) is a replacement filter for use with select Makita Dust Extractors (models DX01, DX06, DX08, DX09 sold separately) and the 18V LXT® Brushless 1" Rotary Hammer (XRH01Z, sold separately). The efficient HEPA filtration system captures 99.97% of particulates at .3 microns and larger. The 199557-7 meets HEPA standards for dust extractors when HEPA filter is installed. The filter installs quickly and easily.