This an alternative way to do the Z endstop pin in a V2, instead of using a deflanged GT2 20T pulley, it uses 2 5x7x8 sleeve copper bearings/bushing this is pretty simple to assemble. The reason behind this is to help keep the pin from falling out.

This mod was based on the work done by Voron Discord user L.e.o.p.a.r.d for the Micron 3D Printer.