This is a tight fitting clip to mount your Pat's quick hitch spreader bar to your rops so it will always be at the ready when changing your 3 point attachments. You will need M6 35mm cap head screws and hex nuts. you may have to drill out the hole due to 3d prints inside diameters' shrinking. I printed on a Bambu labs X1 Carbon. using tough PLA with the strength preset in its slicer. So far I haven't had any problems with using the tough PLA. No support needed