This object is especially useful if you have a Maker Select and have already installed the Z-axis height mod. This filament guide was designed to attach through the spare mounting holes revealed when the Z-axis plate is raised.
However, this should mount on the machine with or without the Z-axis mod installed. I made this mod because I couldn't find any filament guides that mounted onto the printer in the direction I wanted. To be specific, feeding filament from the left of the machine. It was one of those rare objects that printed right on the first try.