This is a smaller version of the previous clock with the insert hole. This one uses a smaller clock part 33mm found on ebay.

Here's where to locate the clock insert on ebay:
https://www.ebay.com/itm/Waterproof-7-8-1-Universal-Motorcycle-Motorbike-Bike-Handlebar-Bar-Mount-Clock/322669746087?hash=item4b209d97a7:g:kk0AAOSwVRpZnA1v

or search for "Waterproof 7/8 1 Universal Motorcycle Motorbike Bike Handlebar Bar Mount Clock".

After printing, it might be good to finish it with primer and some sort of metallic paint.

I printed it in ABS then sprayed it with Primer then with Shiny silver paint. If you print in another material you may have to adjust the size depending on your material's shrinkage so that the clock parts fit snugly of course.