You have your favorite Metabo grinder, now combine that with the Metabo ASR 35 ACP AutoClean Plus HEPA vacuum cleaner for a dust-free work area. Works well for concrete and rock dust, solid particles and non-flammable liquids during grinding, drilling and cutting. Plug your tool directly into the vacuum, and power up the vacuum by turning your tool on. AutoClean is an electromagnetic vibration filter cleaning to ensure that you always have a clean filter without interrupting your work. Non-HEPA version also available.