Adapter part to replace the KR blade holder bottom part.
This is the Blade Holder:
https://thesaberarmory.com/collections/blade-holders/products/elite-graflex-1-blade-holder
Allows to install the 4-40 threaded rods in the correct position and to make a better match with the chassis below it.
(this adapter uses a 7/8 NPXL PCB holder -
https://thesaberarmory.com/products/shtokcustomworx-npxl-v3-led-strip-pcb-holder-hilt-side-7-8?variant=39359432589348)