Showerhead holder for 24mm rail

Original design credit to:
https://www.printables.com/model/386140-shower-head-holder

I tried a few of the original models, but none fit my 24mm rail, or held my particular showerhead very well. Inspired by ThreeDMichael's design, I started from scratch and modeled everything in Fusion360 for a 24mm rail in mind along with some improvements.

Improvements made: 

Course threads.  Easier on the hands and quicker to loosen/tighten, especially while in the shower.

Added tolerance to the threads.  Original model had none and would bind.

Added an extra tolerance gap in the rear cap that so one can screw the cap all the way so no exposed threads can be seen.

Increased the size and geometry for the showerhead holder.  Mine was too thick to fit in the original.

Lengthened the spacer slightly to allow for more squeeze engagement on the rail.  
 

I'm aware the original model by ThreeDMichael does not allow remixing, but I was not able to get a response to a request for a 24mm version, so I made my own from scratch and made improvements to the design.  (STL's are a pain to work with, and usually not worth it) I wanted this to be posted to help anyone else who has a 24mm rail like mine.