Every size of saddle clip you could ever want in just two files.Get two M4 nuts, two screws a bit longer than needed when the clip is tight. Usually 16mm-20mm depending on requirements. If you need a 50mm I.D saddle you won't need to edit this as that's what the files are currently set to. Load the FCStd files into FreeCAD and adjust the Saddle profile sketch to your chosen size. Export the final object as an .stl or .obj file and load into your fave printing software. Print on it's side so as to get the lines along it's length. You may well need to print a brim or suchlike to stop it peeling off the bed and won't need supports. You may need to run a 4mm drill bit through the holes just to clear them. Do the easy-peasy assembly thing.