GrabCAD
This Loft feature used was made using three sketches at scale 1:0.75:0.5 which is rotated at 15 degrees each.
So to get the sketches done successfully, un-tick Associative option at a place where you will do circular pattern to the sketch.
Direct link to the original creator's page
This model is published by its creator on GrabCAD. STLFinder only indexes it: the "View on GrabCAD" button above opens the original page, where the creator shares the AUTODESK INVENTOR, RENDERING files under their own license.
This model is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
Yes, the creator shares it at no cost on GrabCAD. Some creators accept tips or donations.
Check the license (see original page) on the original GrabCAD page. Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer.