You can use these parts to move a standard optical endstop from printer head to the left X-axis carriage. You can use the standard mechanical endstop from a filament sensor. For assembly the mod you will need the following parts: Screw M3x10 - 1 pieces Nut M3 - 1 pieces
I think it's a not a good idea. You need the same endstop sensor used in FB5 filament runout module. Not a different vendor. Better way is to open a module to ensure you choose a right sensor.