These limit switches are derived from the originals made by Ratrig and based on a concept by people in the Ratrig User Group on Facebook.
They are linked in my youtube video on Self Squaring Y-Axes on your Ratrig CNC using an xPro V5, but can be used in any (Openbuilds) CNC Build.
Features:
2 versions; left/rear , right/front side depending on your position.
My Youtube video on Self Squaring Y Axes:
The author hasn't provided the model origin yet.