Default knob for TurboTwist 2 spinner?

[SRGilbert]

Can anyone post a picture and dimensions of the default knob that is included with the TurboTwist 2 spinner?  The GGG description says "Stylish Red, shiny aluminum-shell" but all the photos show a black knob.

Is the red knob solid aluminum?  I might not be able to use the ESC (X-Arcade 2 player) due to short depth of the box, but I'm concerned about spin.

Also, Randy says "If operation as a spinner is desired and a lightweight knob is to be used, it is strongly recommended that the optional Energy Storage Cylinder (ESC) is purchased." but doesn't say which knobs are considered "lightweight"?

[RandyT]

As written, it has an aluminum shell.  It is not a solid aluminum knob.  It is a lightweight knob.

If you have no need for a steering wheel or the Accu-twist feature, and you have limited space below the panel, I highly recommend the TT2 Sci-Winder.

[SRGilbert]

Thanks Randy!  I would have gone directly to the source but I know you are a busy guy.