The nilfisk multi 11 30t is a new wet amp dry vacuum cleaner and is useful for a wide range of applications around the home car diy and serious hobbyist this can be used to vacuum liquids or dry dirt with or without bagsone of the best features on this great vacuum is the automatic dust extraction feature for connection directly to power tools so when you start drilling the vacuum automatically switches on and extracts any dust or mess the vacuum then cuts out automatically a few seconds