The milwaukee m12 de dust extractor is a versatile tool that can be used as both a dedicated dust extractor as well as a hand held vacuum it fits all milwaukee sds plus drills and the majority of other brands drills between 43 59mm neck size and is right or left mounting the dust extractor has a hepa filter with 997 efficiency suction can be set to either constant or automatic when the drill is in use in its automatic mode it has a 5 second switch off time delay to ensure that dust from a hole i