This is one of my prusa reinforced parts. It is thicker, have more rounded parts and 2 screws for attach to the 8mm rod.
It has a "designed brim", easy removable with a cutter. This brim avoid warping better than brim created with slicers because it is not just gropued lines, it is a solid layer.
It is designed for mechanical end stop 1.2, shown in last picture.
60% infill, 2 solid layers bottom and top, 2 perimeters, 270ºC-90ºC ABS