The one for the Metz 54 unit came as a 3 piece set.
1. an adapter that slides on the flash unit
2. the base of the lightsphere
3. the domed cover which is detachable

the whole outfit works pretty slick, sort of a portable softlight
kind of effect.
For me, it works pretty good, using  manual mode on the camera
and the flash set to auto

wow, and people used to sneer at Monte for patting himself on the back, this
guy hard sells everything he touches and puts his name on.

there are dozens of various mini modifiers out there.  from complex white
card holders, to softboxes of various sizes, to things as simple as a file
card held with a rubber band.

first, do you understand what a modifier does?   it takes a pin point light
source and makes seem larger.  The first modifier is the one inside the
unit, that thing behind the tube.   what do most of snap on devices do to a
shoe flash?  They make the 2 inch light source into a six inch one.   That
helps a bit with close ups.

hey, if you want to make a big difference learn to use a slaved key light.
It really astonishes photogs the depth and 3d dimention you get, the subject
pop up off the paper, you can see texture and shape.   Two straight flashes
will beat one slightly softened one most of the time.