The Atrix ATI55M Magnetic Nut Driver 5.5MM is 5.5MM magnetic nut driver with powerful rare earth, self-adjusting sliding magnet. The Atrix ATI55M nut driver consists of a hardened chrome-vanadium steel shaft with chrome plating and the handle has a non slip comfortable rubber grip. The Atrix ATI55M is RoHS compliant and unique self-adjusting sliding magnets grabs 5.5MM hex screws with different heights of heads which results in better hold and less drops than fixed magnet nut drivers.