Improved Z-Endstop Bar for Sunhokey Prusa i4

I found that the screw at the provided stock endstop bar always shifts every print, which makes it tedious to level the bed every time. I've made a simple and quick-adjustable endstop bar to replace it. Ever since I used these my z-height after homing has been really consistent!

No supports/rafts required, print resolution doesn't really matter, just lie it flat on the print bed for both parts. I printed it at 100% infill to ensure it can endure a lot of stress.