Summary This is a telescope or binocular mount to fit your smartphone. Its universal for the smartphone and the eyepiece to. Standard size fit a 1.25 inch eyepiece. Increase scale in your slicer for bigger eyepiece (Keep in mind to increase the size of the eyepiecescrew). Print Settings Printer: TRONXY A3X Rafts: Doesn't Matter Supports: Yes Resolution: 1.2 Infill: 15% Notes: My printer does not print well the screw hole when on the side so to make the screw fit I reprinted the one that were to small to fit at 115% of the size on X and Y but not Z to keep the thread step.