Although the Bracket Handle Mount fits Metz flash units, those who prefer to use Metz's own quick-release system need to use one of the Stroboframe Metz mounts. The mounts have a machined tongue that slides directly into the Metz quick-release coupling. For use with Metz 45 and 60 Series on the RL 2000, R4b, Camera Flip, QR66 brackets.