This listing is for a length of cable and the remote control box used with the Rock-ola Model 2173 Remote Volume Control.  The piece of cable is about 26 feet or 8 meters long.

I DO NOT HAVE THE MOTOR ASSEMBLY THAT MOUNTS ON THE FLOOR OF THE JUKEBOX.  Please refer to the two scans in the photo gallery.

The Rock-ola Kit 2173 is a motorized Remote Volume Control used in stereo Rock-ola models 453 and 454 but can be used on later models also.  I do not know exactly which models however - the instruction sheet says to "SEE ACCESSORY PLACEMENT LABEL ON BACK DOOR" of the machine in question. 

I have scanned the installation instructions and you can view them after the last photos.
A paper copy of these instructions is also included in the shipment.